feat(langchain): Support `BaseCallbackManager`

[szokeasaurusrex]

While implementing #4479, I noticed that our Langchain integration lacks support for the local_callbacks having type BaseCallbackManager, which according to the type hint is possible.

This change adds support for this case.

---

Thank you for contributing to sentry-python! Please add tests to validate your changes, and lint your code using tox -e linters.

Running the test suite on your PR might require maintainer approval.

[codecov[bot]]

Codecov Report

Attention: Patch coverage is 70.00000% with 6 lines in your changes missing coverage. Please review.

Project coverage is 80.68%. Comparing base (c31ba06) to head (048c148). Report is 1 commits behind head on master.

:white_check_mark: All tests successful. No failed tests found.

Files with missing lines	Patch %	Lines
sentry_sdk/integrations/langchain.py	70.00%	3 Missing and 3 partials :warning:

Additional details and impacted files

@@            Coverage Diff             @@
##           master    #4486      +/-   ##
==========================================
- Coverage   80.76%   80.68%   -0.08%     
==========================================
  Files         156      156              
  Lines       16483    16496      +13     
  Branches     2801     2806       +5     
==========================================
- Hits        13312    13310       -2     
- Misses       2290     2303      +13     
- Partials      881      883       +2     

Files with missing lines	Coverage Δ
sentry_sdk/integrations/langchain.py	70.90% <70.00%> (+0.77%)	:arrow_up:

... and 4 files with indirect coverage changes