[Fleet]: All policies using Logstash output is not displayed in the error while adding Fleet server integration to multiple policies.

[amolnater-qasource]

Kibana Build details:

VERSION: 8.16.0 SNAPSHOT
BUILD: 77286
COMMIT: dcb16775f8192c2fc8ce629999da779e8b894413

Preconditions:

1. 8.16.0 SNAPSHOT Kibana cloud environment should be available.
2. Sample logstash output should be created and selected by a few agent policies.

Steps to reproduce:

1. Navigate to Integration>Fleet Server.
2. Click Add Fleet Server integration>Existing agent policies>select multiple integrations including policies using logstash output.
3. Click Save and continue button.
4. Observe error is displayed for 1 integration.
5. Remove this integration and click Save and continue button again.
6. Observe error is displayed for another integration.
7. Untill all the policies using logstash output are not removed user isn't able to save the policy.[Expected]

Expected Result:
All policies using Logstash output should be displayed in the error while adding Fleet server integration to multiple policies.

Screen Recording:

Add.integration.-.Fleet.Server.-.Integrations.-.Elastic.-.Google.Chrome.2024-08-13.12-01-23.mp4

Feature:
#75867

[elasticmachine]

Pinging @elastic/fleet (Team:Fleet)

[amolnater-qasource]

@karanbirsingh-qasource Please review.

[ghost]

secondary review of this ticket is done

[jen-huang]

IMO this behavior is okay because we try to fail fast on the backend. We check the compatibility of agent policies one by one and fail immediately when an issue is found, instead of "bulk checking" at once. Closing as won't fix. cc @kpollich

[amolnater-qasource]

Thank you for confirming the expected behavior @jen-huang