Fix agent type update

[owaiskazi19]

Description

Fix agent update

{
"error": {
  "root_cause": [
  {
  "type": "illegal_argument_exception",
  "reason": "Agent type cannot be updated"
  }
  ],
  "type": "illegal_argument_exception",
  "reason": "Agent type cannot be updated"
  },
  "status": 400
}

Related Issues

Resolves #4340

Check List

• New functionality includes testing.
• New functionality has been documented.
• API changes companion pull request created.
• Commits are signed per the DCO using --signoff.
• Public documentation issue/PR created.

By submitting this pull request, I confirm that my contribution is made under the terms of the Apache 2.0 license.
For more information on following Developer Certificate of Origin and signing off your commits, please check here.

[rithin-pullela-aws]

LGTM!

Can you rebase your main with current main? Looks like around 27 commits are pushed

[pyek-bot]

rest LGTM, thanks for this!

[owaiskazi19]

Netty errors. Dependent on #4339

 * What went wrong:
Could not determine the dependencies of task ':opensearch-ml-plugin:dependencyLicenses'.
> Failed to query the value of task ':opensearch-ml-plugin:dependencyLicenses' property 'dependencies'.
   > Could not resolve all dependencies for configuration ':opensearch-ml-plugin:runtimeClasspath'.
      > Could not resolve io.netty:netty-codec-http:4.1.125.Final.
        Required by:
            project :opensearch-ml-plugin > project :opensearch-ml-algorithms > org.opensearch:opensearch-remote-metadata-sdk-ddb-client:3.4.0.0-SNAPSHOT:20251023.014719-2
            project :opensearch-ml-plugin > project :opensearch-ml-algorithms > org.opensearch:opensearch-remote-metadata-sdk-ddb-client:3.4.0.0-SNAPSHOT:20251023.014719-2 > io.netty:netty-codec-http2:4.1.125.Final
         > Conflict found for module 'io.netty:netty-codec-http': between versions 4.1.125.Final and 4.1.124.Final
      > Could not resolve io.netty:netty-codec-http2:4.1.125.Final.
        Required by:
            project :opensearch-ml-plugin > project :opensearch-ml-algorithms > org.opensearch:opensearch-remote-metadata-sdk-ddb-client:3.4.0.0-SNAPSHOT:20251023.014719-2
         > Conflict found for module 'io.netty:netty-codec-http2': between versions 4.1.125.Final and 4.1.124.Final
      > Could not resolve io.netty:netty-codec:4.1.125.Final

[brianf-aws]

Netty errors. Dependent on #4339

 * What went wrong:
Could not determine the dependencies of task ':opensearch-ml-plugin:dependencyLicenses'.
> Failed to query the value of task ':opensearch-ml-plugin:dependencyLicenses' property 'dependencies'.
   > Could not resolve all dependencies for configuration ':opensearch-ml-plugin:runtimeClasspath'.
      > Could not resolve io.netty:netty-codec-http:4.1.125.Final.
        Required by:
            project :opensearch-ml-plugin > project :opensearch-ml-algorithms > org.opensearch:opensearch-remote-metadata-sdk-ddb-client:3.4.0.0-SNAPSHOT:20251023.014719-2
            project :opensearch-ml-plugin > project :opensearch-ml-algorithms > org.opensearch:opensearch-remote-metadata-sdk-ddb-client:3.4.0.0-SNAPSHOT:20251023.014719-2 > io.netty:netty-codec-http2:4.1.125.Final
         > Conflict found for module 'io.netty:netty-codec-http': between versions 4.1.125.Final and 4.1.124.Final
      > Could not resolve io.netty:netty-codec-http2:4.1.125.Final.
        Required by:
            project :opensearch-ml-plugin > project :opensearch-ml-algorithms > org.opensearch:opensearch-remote-metadata-sdk-ddb-client:3.4.0.0-SNAPSHOT:20251023.014719-2
         > Conflict found for module 'io.netty:netty-codec-http2': between versions 4.1.125.Final and 4.1.124.Final
      > Could not resolve io.netty:netty-codec:4.1.125.Final

@owaiskazi19 you need #4338

the one i linked is for 2.19