Deduplicate components before compiling

[philippjfr]

Two changes:

• Do not include the same component multiple times
• If multiple components point to the same JS file do not duplicate it in the bundle

[codecov]

Codecov Report

Attention: Patch coverage is 80.00000% with 3 lines in your changes missing coverage. Please review.

Project coverage is 87.11%. Comparing base (2f6e822) to head (6d7be8c).
Report is 2 commits behind head on main.

Files with missing lines	Patch %	Lines
panel/io/compile.py	78.57%	3 Missing ⚠️

Additional details and impacted files

@@             Coverage Diff             @@
##             main    #7887       +/-   ##
===========================================
+ Coverage   47.48%   87.11%   +39.62%     
===========================================
  Files         334      346       +12     
  Lines       50666    53089     +2423     
===========================================
+ Hits        24060    46246    +22186     
+ Misses      26606     6843    -19763     

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