fix: Add hard limit to log batcher

[alexander-alderman-webb]

Description

Introduce a hard limit on the number of elements in the log batcher. The size constraint prevents the log batcher from using too much memory.

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

✅ All modified and coverable lines are covered by tests.
✅ Project coverage is 83.97%. Comparing base (faa327c) to head (83e206a).
⚠️ Report is 1 commits behind head on master.
✅ All tests successful. No failed tests found.

Additional details and impacted files

@@ Coverage Diff @@ ## master #5069 +/- ## ======================================= Coverage 83.96% 83.97% ======================================= Files 179 179 Lines 17943 17948 +5 Branches 3192 3193 +1 ======================================= + Hits 15066 15071 +5  Misses 1905 1905 Partials 972 972 

Files with missing lines	Coverage Δ
sentry_sdk/_log_batcher.py	80.68% <100.00%> (+1.16%)	⬆️
sentry_sdk/client.py	83.80% <100.00%> (ø)