[8.x] [Discover] Fix SASS mixed-declations deprecation warnings (#193001) (#193198)

# Backport

This will backport the following commits from `main` to `8.x`:
- [[Discover] Fix SASS mixed-declations deprecation warnings
(#193001)](https://github.com/elastic/kibana/pull/193001)

<!--- Backport version: 9.4.3 -->

### Questions ?
Please refer to the [Backport tool
documentation](https://github.com/sqren/backport)

<!--BACKPORT [{"author":{"name":"Julia
Rechkunova","email":"julia.rechkunova@elastic.co"},"sourceCommit":{"committedDate":"2024-09-17T16:14:17Z","message":"[Discover]
Fix SASS mixed-declations deprecation warnings (#193001)\n\n- Closes
https://github.com/elastic/kibana/issues/190890\r\n- Closes
https://github.com/elastic/kibana/issues/190888\r\n- Closes
https://github.com/elastic/kibana/issues/190889\r\n- Closes
https://github.com/elastic/kibana/issues/190891","sha":"bdac358b5eddb17fba1f2d2f76e777b28db361ff","branchLabelMapping":{"^v9.0.0$":"main","^v8.16.0$":"8.x","^v(\\d+).(\\d+).\\d+$":"$1.$2"}},"sourcePullRequest":{"labels":["release_note:skip","v9.0.0","Team:DataDiscovery","backport:prev-minor"],"title":"[Discover]
Fix SASS mixed-declations deprecation
warnings","number":193001,"url":"https://github.com/elastic/kibana/pull/193001","mergeCommit":{"message":"[Discover]
Fix SASS mixed-declations deprecation warnings (#193001)\n\n- Closes
https://github.com/elastic/kibana/issues/190890\r\n- Closes
https://github.com/elastic/kibana/issues/190888\r\n- Closes
https://github.com/elastic/kibana/issues/190889\r\n- Closes
https://github.com/elastic/kibana/issues/190891","sha":"bdac358b5eddb17fba1f2d2f76e777b28db361ff"}},"sourceBranch":"main","suggestedTargetBranches":[],"targetPullRequestStates":[{"branch":"main","label":"v9.0.0","branchLabelMappingKey":"^v9.0.0$","isSourceBranch":true,"state":"MERGED","url":"https://github.com/elastic/kibana/pull/193001","number":193001,"mergeCommit":{"message":"[Discover]
Fix SASS mixed-declations deprecation warnings (#193001)\n\n- Closes
https://github.com/elastic/kibana/issues/190890\r\n- Closes
https://github.com/elastic/kibana/issues/190888\r\n- Closes
https://github.com/elastic/kibana/issues/190889\r\n- Closes
https://github.com/elastic/kibana/issues/190891","sha":"bdac358b5eddb17fba1f2d2f76e777b28db361ff"}}]}]
BACKPORT-->

Co-authored-by: Julia Rechkunova <julia.rechkunova@elastic.co>

packages/kbn-dom-drag-drop/src/sass/draggable.scss

@@ -33,9 +33,10 @@
 
   &:focus,
   &:focus-within {
-    @include euiFocusRing;
     pointer-events: none;
     z-index: $domDragDropZLevel2;
+
+    @include euiFocusRing;
   }
 }
 

packages/kbn-unified-data-table/src/components/custom_toolbar/render_custom_toolbar.scss

@@ -5,6 +5,7 @@
     block-size: $euiSizeXL;
     border: $euiBorderThin;
     border-radius: $euiBorderRadiusSmall;
+    transition: transform $euiAnimSpeedNormal ease-in-out;
 
     // making the icons larger than the default size
     & svg {
@@ -18,7 +19,6 @@
     }
 
     // add toolbar control animation
-    transition: transform $euiAnimSpeedNormal ease-in-out;
     &:hover {
       transform: translateY(-1px);
     }

packages/kbn-unified-field-list/src/components/field_list_grouped/field_list_grouped.scss

@@ -3,12 +3,13 @@
  */
 
 .unifiedFieldList__fieldListGrouped {
-  @include euiOverflowShadow;
-  @include euiScrollBar;
   margin-left: -$euiSize; /* 1 */
   position: relative;
   flex-grow: 1;
   overflow: auto;
+
+  @include euiOverflowShadow;
+  @include euiScrollBar;
 }
 
 .unifiedFieldList__fieldListGrouped__container {

src/plugins/discover/public/application/main/components/layout/discover_layout.scss

@@ -9,6 +9,10 @@ discover-app {
 }
 
 .dscPage {
+  flex-direction: column;
+  overflow: hidden;
+  padding: 0;
+
   @include euiBreakpoint('m', 'l', 'xl') {
     @include kibanaFullBodyHeight();
 
@@ -16,14 +20,10 @@ discover-app {
       @include kibanaFullBodyHeight($euiSize * 3);
     }
   }
+}
 
-  flex-direction: column;
+.dscPage .dscPageBody {
   overflow: hidden;
-  padding: 0;
-
-  .dscPageBody {
-    overflow: hidden;
-  }
 }
 
 .dscPageBody__inner {