Chatbot UI update

[TamiTakamiya]

Jira Issue: n/a

Description

Minor Chatbot UI update on following three points:

1. Update PF6 chatbot library to 2.2.0-prerelease.21, which includes the fix for Markdown table rendering issue patternfly/chatbot#416
   • Also added @patternfly/react-table and updated eslint-plugin-testing-library and typescript-eslint
2. Added a small change on the timing to stop showing the waiting icon. Before the change, the waiting icon was deleted when the very first response was received from the chatbot service. It was changed to delete when the first visible data is received. There is a gap between the first response and the first visible data.
   • Aslo added the Accept header for streaming chat. It is needed when the chatbot UI is connected to the new streaming chat endpoint, which is being developed on AI Connect service.

Testing

Steps to test

1. Pull down the PR
2. Run unit tests

Scenarios tested

Unit tests + manual test by running the local vite server.

Production deployment

• This code change is ready for production on its own
• This code change requires the following considerations before going to production:

[TamiTakamiya]

I changed my dev environment recently and the original commit was not GPG signed. Pushed a new commit with my GPG signature.

[sonarqubecloud]

Quality Gate passed

Issues
0 New issues
0 Accepted issues

Measures
0 Security Hotspots
100.0% Coverage on New Code
0.0% Duplication on New Code

See analysis details on SonarQube Cloud