Bubble up Analysis error

[ahuang11]

Fixes bug in custom analyses docs.

Closes: #879 by bubbling up exception from custom analysis:
with self.interface.param.update(callback_exception="raise"):

[codecov]

Codecov Report

Attention: Patch coverage is 0% with 29 lines in your changes missing coverage. Please review.

Project coverage is 51.65%. Comparing base (3b580de) to head (e1bc58e).
Report is 2 commits behind head on main.

Files with missing lines	Patch %	Lines
lumen/ai/agents.py	0.00%	29 Missing ⚠️

Additional details and impacted files

@@            Coverage Diff             @@
##             main     #880      +/-   ##
==========================================
- Coverage   51.66%   51.65%   -0.01%     
==========================================
  Files         108      108              
  Lines       13697    13698       +1     
==========================================
  Hits         7076     7076              
- Misses       6621     6622       +1     

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