Unit test for Exif support in the Image Dashboards

[Advitya17]

Description

Added unit test for exif support on the Image Dashboards.

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 #2382 (32547dc) into main (fef4248) will decrease coverage by 9.65%.
The diff coverage is n/a.

@@            Coverage Diff             @@
##             main    #2382      +/-   ##
==========================================
- Coverage   89.27%   79.63%   -9.65%     
==========================================
  Files         122       26      -96     
  Lines        6732     2278    -4454     
==========================================
- Hits         6010     1814    -4196     
+ Misses        722      464     -258     

Flag	Coverage Δ
unittests	79.63% <ø> (-9.65%)	⬇️

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see 120 files with indirect coverage changes

[github-actions]

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

[github-actions]

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

[github-actions]

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

[github-actions]

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