fix: modal size for lti content

[Faraz32123]

Ticket: COSMO2-716

• dialogClassName was working with Modal from paragon, but after paragon v23 upgrade. We replaced Modal with ModalDialog with which dialogClassName doesn't work.
  • So, replace dialogClassName with simple className to apply same styles to get the past behavior for the modal.

Please review paragon v22 Modal Props VS paragon ModalDialog Props API which used className instead of dialogClassName.

[codecov[bot]]

Codecov Report

:white_check_mark: All modified and coverable lines are covered by tests. :white_check_mark: Project coverage is 90.83%. Comparing base (9bf5d01) to head (e66951c). :warning: Report is 2 commits behind head on master.

Additional details and impacted files

@@           Coverage Diff           @@
##           master    #1787   +/-   ##
=======================================
  Coverage   90.83%   90.83%           
=======================================
  Files         344      344           
  Lines        5792     5792           
  Branches     1331     1372   +41     
=======================================
  Hits         5261     5261           
+ Misses        514      512    -2     
- Partials       17       19    +2     

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