fix: add back panel prop to IrisGrid Plugin

[AkshatJawne]

Closes #2093 (For now, will reopen ticket after merge for better solution to handle deprecated panel prop)

[codecov]

Codecov Report

Attention: Patch coverage is 0% with 1 line in your changes missing coverage. Please review.

Project coverage is 46.68%. Comparing base (de5ce40) to head (bf39dbc).
Report is 1 commits behind head on main.

Files	Patch %	Lines
...ashboard-core-plugins/src/panels/IrisGridPanel.tsx	0.00%	1 Missing ⚠️

Additional details and impacted files

@@            Coverage Diff             @@
##             main    #2155      +/-   ##
==========================================
- Coverage   46.68%   46.68%   -0.01%     
==========================================
  Files         691      691              
  Lines       38587    38588       +1     
  Branches     9806     9743      -63     
==========================================
  Hits        18016    18016              
+ Misses      20560    20519      -41     
- Partials       11       53      +42     

Flag	Coverage Δ
unit	46.68% <0.00%> (-0.01%)	⬇️

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[AkshatJawne]

Added current ticket number in TODO comment, and updated description to indicate that ticket will reopen after this merge to look at a more long-term, proper solution.