Small telemetry fixes (#126831)

## Summary

Small fixes and just a few docs to clarify things. I might be wrong on what I'm doing, so please let me know.

Looking at the telemetry data from servers I see things like this (I made this up, not real data, but the shape of the data is the same as what we see on the servers):

```json
"securitySolution:overview" : {
  "clicks_total" : 420,
  "minutes_on_screen_total" : 55.58454999999998,
  "viewId" : "main",
  "clicks_7_days" : 0,
  "clicks_90_days" : 0,
  "appId" : "securitySolution:overview",
  "minutes_on_screen_7_days" : 0,
  "minutes_on_screen_30_days" : 0,
  "clicks_30_days" : 0,
  "minutes_on_screen_90_days" : 0
},
``` 

and I also see the views which is 👍 what I would make the dashboards from ... So not for sure if the structure above this is legacy. I could not get the shape of data above to happen locally. However, this shape below seems better and what I would create dashboards from.

```json
"securitySolution" : {
  "clicks_total" : 420,
  "minutes_on_screen_total" : 2.90670000000006,
  "viewId" : "main",
  "clicks_7_days" : 70,
  "clicks_90_days" : 370,
  "appId" : "securitySolution",
  "minutes_on_screen_7_days" : 104.62756666666667,
  "minutes_on_screen_30_days" : 121.61288333333334,
  "clicks_30_days" : 121,
  "minutes_on_screen_90_days" : 250.55426666666665,
  "views" : [
    {
      "clicks_total" : 8,
      "minutes_on_screen_total" : 5.709183333333334,
      "viewId" : "overview",
      "clicks_7_days" : 0,
      "clicks_90_days" : 6,
      "appId" : "securitySolution",
      "minutes_on_screen_7_days" : 0,
      "minutes_on_screen_30_days" : 0.5038833333333333,
      "clicks_30_days" : 0,
      "minutes_on_screen_90_days" : 6.565383333333333
    },
```

With this new key of "securitySolutionUI" I don't see keys like `securitySolutionUI:overview` but I do see the views like above so let me know if changing the keys here in some areas are a mistake or not or if this is not the right thing to do.


Ref to earlier PR with the new key of `securitySolutionUI` from `APP_ID` changing:
https://github.com/elastic/kibana/pull/113573

src/plugins/kibana_usage_collection/server/collectors/application_usage/schema.ts

@@ -158,6 +158,9 @@ export const applicationUsageSchema = {
   security_logout: commonSchema,
   security_overwritten_session: commonSchema,
   securitySolutionUI: commonSchema,
+  /**
+   * @deprecated legacy key for users that still have bookmarks to the old siem name. "securitySolutionUI" key is the replacement
+   */
   siem: commonSchema,
   space_selector: commonSchema,
   uptime: commonSchema,

src/plugins/kibana_usage_collection/server/collectors/ui_metric/schema.ts

@@ -54,14 +54,17 @@ const uiMetricFromDataPluginSchema: MakeSchemaFrom<UIMetricUsage> = {
   security_login: commonSchema,
   security_logout: commonSchema,
   security_overwritten_session: commonSchema,
-  securitySolution: commonSchema,
-  'securitySolution:overview': commonSchema,
-  'securitySolution:detections': commonSchema,
-  'securitySolution:hosts': commonSchema,
-  'securitySolution:network': commonSchema,
-  'securitySolution:timelines': commonSchema,
-  'securitySolution:case': commonSchema,
-  'securitySolution:administration': commonSchema,
+  securitySolutionUI: commonSchema,
+  'securitySolutionUI:overview': commonSchema,
+  'securitySolutionUI:detections': commonSchema,
+  'securitySolutionUI:hosts': commonSchema,
+  'securitySolutionUI:network': commonSchema,
+  'securitySolutionUI:timelines': commonSchema,
+  'securitySolutionUI:case': commonSchema,
+  'securitySolutionUI:administration': commonSchema,
+  /**
+   * @deprecated legacy key for users that still have bookmarks to the old siem name. "securitySolutionUI" key is the replacement
+   */
   siem: commonSchema,
   space_selector: commonSchema,
   uptime: commonSchema,

src/plugins/telemetry/schema/oss_plugins.json

@@ -8869,7 +8869,7 @@
             }
           }
         },
-        "securitySolution:overview": {
+        "securitySolutionUI": {
           "type": "array",
           "items": {
             "properties": {
@@ -8888,7 +8888,7 @@
             }
           }
         },
-        "securitySolution:detections": {
+        "securitySolutionUI:overview": {
           "type": "array",
           "items": {
             "properties": {
@@ -8907,7 +8907,7 @@
             }
           }
         },
-        "securitySolution:hosts": {
+        "securitySolutionUI:detections": {
           "type": "array",
           "items": {
             "properties": {
@@ -8926,7 +8926,7 @@
             }
           }
         },
-        "securitySolution:network": {
+        "securitySolutionUI:hosts": {
           "type": "array",
           "items": {
             "properties": {
@@ -8945,7 +8945,7 @@
             }
           }
         },
-        "securitySolution:timelines": {
+        "securitySolutionUI:network": {
           "type": "array",
           "items": {
             "properties": {
@@ -8964,7 +8964,7 @@
             }
           }
         },
-        "securitySolution:case": {
+        "securitySolutionUI:timelines": {
           "type": "array",
           "items": {
             "properties": {
@@ -8983,7 +8983,26 @@
             }
           }
         },
-        "securitySolution:administration": {
+        "securitySolutionUI:case": {
+          "type": "array",
+          "items": {
+            "properties": {
+              "key": {
+                "type": "keyword",
+                "_meta": {
+                  "description": "The event that is tracked"
+                }
+              },
+              "value": {
+                "type": "long",
+                "_meta": {
+                  "description": "The value of the event"
+                }
+              }
+            }
+          }
+        },
+        "securitySolutionUI:administration": {
           "type": "array",
           "items": {
             "properties": {