[Infra][Serverless]Enable OSQuery in serverless (#182608)

closes [181620](https://github.com/elastic/kibana/issues/181620)
## Summary

Enables OSquery in serverless

<img width="1724" alt="image"
src="22fa04f9-cc10-43ea-ab28-68317b8757ce">

### How to test
- run `yarn es serverless --projectType=oblt --kill --clean --license
trial -E xpack.security.authc.api_key.enabled=true`
- run `yarn serverless-oblt`
- Start metricbeat 
- Navigate to Infrastructure > Hosts

---------

Co-authored-by: Kibana Machine <42973632+kibanamachine@users.noreply.github.com>

config/serverless.oblt.yml

@@ -53,7 +53,6 @@ xpack.fleet.internal.registry.excludePackages: [
     # Security integrations
     'endpoint',
     'beaconing',
-    'osquery_manager',
 
     # Removed in 8.11 integrations
     'cisco',

test/plugin_functional/test_suites/core_plugins/rendering.ts

@@ -279,7 +279,7 @@ export default function ({ getService }: PluginFunctionalProviderContext) {
          */
         'xpack.infra.featureFlags.metricsExplorerEnabled (any)',
         'xpack.infra.featureFlags.customThresholdAlertsEnabled (any)',
-        'xpack.infra.featureFlags.osqueryEnabled (any)',
+        'xpack.infra.featureFlags.osqueryEnabled (boolean)',
         'xpack.infra.featureFlags.inventoryThresholdAlertRuleEnabled (any)',
         'xpack.infra.featureFlags.metricThresholdAlertRuleEnabled (any)',
         'xpack.infra.featureFlags.logThresholdAlertRuleEnabled (any)',

x-pack/plugins/observability_solution/infra/server/plugin.ts

@@ -96,10 +96,7 @@ export const config: PluginConfigDescriptor<InfraConfig> = {
         traditional: schema.boolean({ defaultValue: true }),
         serverless: schema.boolean({ defaultValue: false }),
       }),
-      osqueryEnabled: offeringBasedSchema({
-        traditional: schema.boolean({ defaultValue: true }),
-        serverless: schema.boolean({ defaultValue: false }),
-      }),
+      osqueryEnabled: schema.boolean({ defaultValue: true }),
       inventoryThresholdAlertRuleEnabled: offeringBasedSchema({
         traditional: schema.boolean({ defaultValue: true }),
         serverless: schema.boolean({ defaultValue: true }),