Panel buttons should be uniform: change all buttons to "Apply"; all buttons should be at bottom

[tongyu-microsoft]

This PR updates all panel buttons include "Select", "Confirm", "Apply" to "Apply"; all buttons stays at the bottom.

Description

1. feature list:
   Before:
   

After:

2. Axis value selection panel:
   Before:
   

After:

3. new model overview:
   Before:
   

After:

Checklist

• I have added screenshots above for all UI changes.
• I have added e2e tests for all UI changes.
• Documentation was updated if it was needed.

[codecov-commenter]

Codecov Report

Merging #1524 (4ba19fb) into main (8be72b5) will not change coverage.
The diff coverage is n/a.

@@           Coverage Diff           @@
##             main    #1524   +/-   ##
=======================================
  Coverage   87.27%   87.27%           
=======================================
  Files         108      108           
  Lines        5108     5108           
=======================================
  Hits         4458     4458           
  Misses        650      650           

Flag	Coverage Δ
unittests	87.27% <ø> (ø)

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https://responsibleai.blob.core.windows.net/pullrequest/microsoft/responsible-ai-toolbox/tongy/panelButtons/dashboard/index.html

[github-actions]

https://responsibleai.blob.core.windows.net/pullrequest/microsoft/responsible-ai-toolbox/tongy/panelButtons/dashboard/index.html

[github-actions]

https://responsibleai.blob.core.windows.net/pullrequest/microsoft/responsible-ai-toolbox/tongy/panelButtons/dashboard/index.html

[github-actions]

https://responsibleai.blob.core.windows.net/pullrequest/microsoft/responsible-ai-toolbox/tongy/panelButtons/dashboard/index.html

[github-actions]

https://responsibleai.blob.core.windows.net/pullrequest/microsoft/responsible-ai-toolbox/tongy/panelButtons/dashboard/index.html

[github-actions]

https://responsibleai.blob.core.windows.net/pullrequest/microsoft/responsible-ai-toolbox/tongy/panelButtons/dashboard/index.html

[github-actions]

https://responsibleai.blob.core.windows.net/pullrequest/microsoft/responsible-ai-toolbox/tongy/panelButtons/dashboard/index.html

[github-actions]

https://responsibleai.blob.core.windows.net/pullrequest/microsoft/responsible-ai-toolbox/tongy/panelButtons/dashboard/index.html

[github-actions]

https://responsibleai.blob.core.windows.net/pullrequest/microsoft/responsible-ai-toolbox/tongy/panelButtons/dashboard/index.html