closes [elastic#190559](elastic#190559)

## Summary

This PR updates the ES clients in APM to respect the excluded tier
configuration. When this config is set, the ES clients will
automatically add a filter to exclude the specified tiers from queries.

<img width="600" alt="image"
src="https://github.com/user-attachments/assets/9b0de76d-242c-4343-bc30-d5c787316f59">

All queries in APM should have the `_tier` filter (via
`get_apm_events_client`)
<img width="600" alt="image"
src="https://github.com/user-attachments/assets/c525602f-f239-4be8-99c4-65d617962656">

This change also affects alerting (via `alerting_es_client`)
<img width="600" alt="image"
src="https://github.com/user-attachments/assets/750df4d7-5b49-4de5-9294-7afedf11d7e5">

And it impacts the alerts column (via `get_apm_alert_client`)
<img width="600" alt="image"
src="https://github.com/user-attachments/assets/44bd9129-1e72-4a3a-af32-d42a9cd9164d">

### What won't automatically add a filter for `_tier`

- Embeddables
- ML queries

### How to test
- Set the config in Advanced Settings to exclude `data_frozen` and
`data_cold` (optional)
- Navigate to APM and check the query `Inspect` to see if the filter is
present.
- Click through APM to confirm things still work.
- Create one of each type of APM alerts
- Without the config set, queries should not include the `_tier` filter`

---------

Co-authored-by: Elastic Machine <[email protected]>
(cherry picked from commit ee5ef81)

# Conflicts:
#	x-pack/packages/observability/observability_utils/es/queries/exclude_frozen_query.ts
#	x-pack/plugins/cloud_integrations/cloud_experiments/public/launch_darkly_client/index.ts
#	x-pack/plugins/observability_solution/apm/server/lib/helpers/create_es_client/create_apm_event_client/index.test.ts
#	x-pack/plugins/observability_solution/apm/server/lib/helpers/get_apm_event_client.ts
#	x-pack/plugins/observability_solution/apm/server/lib/helpers/tier_filter.ts
#	x-pack/plugins/observability_solution/apm_data_access/server/lib/helpers/create_es_client/create_apm_event_client/index.ts
#	x-pack/plugins/observability_solution/apm_data_access/server/lib/helpers/index.ts
#	x-pack/plugins/observability_solution/apm_data_access/tsconfig.json
#	x-pack/plugins/observability_solution/observability/server/ui_settings.ts