chore(langchain): Remove integration span limit by default

[alexander-alderman-webb]

Description

Issues

Reminders

• Please add tests to validate your changes, and lint your code using tox -e linters.
• Add GH Issue ID & Linear ID (if applicable)
• PR title should use conventional commit style (feat:, fix:, ref:, meta:)
• For external contributors: CONTRIBUTING.md, Sentry SDK development docs, Discord community

[codecov]

Codecov Report

❌ Patch coverage is 40.00000% with 3 lines in your changes missing coverage. Please review.
✅ Project coverage is 83.94%. Comparing base (3e86962) to head (1297682).
⚠️ Report is 1 commits behind head on master.
✅ All tests successful. No failed tests found.

Files with missing lines	Patch %	Lines
sentry_sdk/integrations/langchain.py	40.00%	2 Missing and 1 partial ⚠️

Additional details and impacted files

@@            Coverage Diff             @@
##           master    #5045      +/-   ##
==========================================
+ Coverage   83.92%   83.94%   +0.01%     
==========================================
  Files         179      179              
  Lines       17890    17890              
  Branches     3181     3182       +1     
==========================================
+ Hits        15015    15017       +2     
  Misses       1909     1909              
+ Partials      966      964       -2     

Files with missing lines	Coverage Δ
sentry_sdk/integrations/langchain.py	68.73% <40.00%> (ø)

... and 2 files with indirect coverage changes