fix(featureDev):fixed in progress UX during backend calls

[kumsmrit]

Types of changes

• [x] Bug fix (non-breaking change which fixes an issue)
• [ ] New feature (non-breaking change which adds functionality)

Description

• There was some mynah update which caused the in progress message to be hidden leading to bad experience for customers as they would not be aware that their calls are in progress.

Solution

• Mynah changes were fixed with this PR: https://github.com/aws/mynah-ui/pull/67
• Bumped mynah-version to use latest fix [

  ](url)

Checklist

• [x] My code follows the code style of this project
• [ ] I have added tests to cover my changes
• [x] A short description of the change has been added to the CHANGELOG if the change is customer-facing in the IDE.
• [ ] I have added metrics for my changes (if required)

License

I confirm that my contribution is made under the terms of the Apache 2.0 license.

[dogusata]

This version update of mynah-ui also contains following fixes

• Authenticate button and suggested follow up answer is expected to be rendered as button in the Chat UI, instead they are appearing inline as text
• Clicking a different button (i.e. "Explain Selected Code") before the "Authenticate" button appears will show the Authenticate button along with "Generating answer prompt". This "Generating answer" prompt will not disappear until the next user input
• Scrolling through the User Input message textbox in the Chat UI doesn't scroll the text, it scrolls the additional UI
• (non-blocking, nice to have) Some clipping on the left hand side when code is shown in the chat response. Toolkit does not control the rendering piece, so has to be handled MynahUI side
• Generating your answer card appears right before the help message called from /help command.