Add support for styles to botorch community PFN

[bletham]

Summary: Style tensors can be specified via a method override, and from there are correctly passed along in the call to the PFN torch model.

Differential Revision: D87847406

[meta-codesync[bot]]

@bletham has exported this pull request. If you are a Meta employee, you can view the originating Diff in D87847406.

[codecov[bot]]

Codecov Report

:white_check_mark: All modified and coverable lines are covered by tests. :white_check_mark: Project coverage is 99.99%. Comparing base (5c769ef) to head (e9d164f). :warning: Report is 1 commits behind head on main.

Additional details and impacted files

@@           Coverage Diff           @@
##             main    #3099   +/-   ##
=======================================
  Coverage   99.99%   99.99%           
=======================================
  Files         219      219           
  Lines       21238    21246    +8     
=======================================
+ Hits        21236    21244    +8     
  Misses          2        2           

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[meta-codesync[bot]]

This pull request has been merged in meta-pytorch/botorch@d3a272185593420d62f68d07f604521f6604a442.