feat(logs): Record discarded log bytes

[alexander-alderman-webb]

Description

Report discarded log size in bytes as part of client reports, based on the specification added in getsentry/sentry-docs@5819cdd.

The reported size is based on the log format submitted to the transport. The bytes representation used to calculate the size in bytes is returned by PayloadRef.get_bytes(). In all common code paths, the representation is a compact utf-8 encoding of the log.

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 84.04%. Comparing base (c720feb) to head (15ca53a).
⚠️ Report is 4 commits behind head on master.
✅ All tests successful. No failed tests found.

Additional details and impacted files

@@           Coverage Diff           @@
##           master    #5144   +/-   ##
=======================================
  Coverage   84.03%   84.04%           
=======================================
  Files         180      180           
  Lines       18223    18227    +4     
  Branches     3235     3236    +1     
=======================================
+ Hits        15314    15318    +4     
  Misses       1921     1921           
  Partials      988      988           

Files with missing lines	Coverage Δ
sentry_sdk/_log_batcher.py	80.89% <100.00%> (+0.21%)	⬆️
sentry_sdk/client.py	83.71% <ø> (ø)
sentry_sdk/transport.py	84.49% <100.00%> (+0.12%)	⬆️