Hide the assistant entry when there isn't data2summary agent

[Qxisylolo]

Description

This pr hides the assistant entry when there isn't data2summary agent
!! This pr is a hard dependency that should be merged after opensearch-project/OpenSearch-Dashboards#9277 has been merged.

has agent:

no agent:

Check List

• New functionality includes testing.
  • All tests pass, including unit test, integration test.
• New functionality has user manual doc added.
• Commits are signed per the DCO using --signoff.

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.

[codecov]

Codecov Report

All modified and coverable lines are covered by tests ✅

Project coverage is 85.03%. Comparing base (581a7ca) to head (b2b3469).
Report is 20 commits behind head on main.

Additional details and impacted files

@@            Coverage Diff             @@
##             main     #417      +/-   ##
==========================================
- Coverage   87.46%   85.03%   -2.44%     
==========================================
  Files          65       72       +7     
  Lines        1891     2105     +214     
  Branches      473      518      +45     
==========================================
+ Hits         1654     1790     +136     
- Misses        236      313      +77     
- Partials        1        2       +1     

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[Hailong-am]

would like to have some unit test

[Hailong-am]

@Qxisylolo would you mind to fix DCO failure according to https://github.com/opensearch-project/dashboards-assistant/pull/417/checks?check_run_id=37588070203

[Qxisylolo]

@Qxisylolo would you mind to fix DCO failure according to https://github.com/opensearch-project/dashboards-assistant/pull/417/checks?check_run_id=37588070203

Fixed, thanks~