Validate quiver otel_* event names at compile time

[cijothomas]

Follow-up to #2957, which intentionally skipped the local macro copies in the quiver crate.

Zero runtime cost (compile-time only). All existing quiver call sites already use short stable identifiers (e.g. quiver.wal.rotate), so no call-site updates were required.

[codecov]

Codecov Report

❌ Patch coverage is 0% with 10 lines in your changes missing coverage. Please review.
✅ Project coverage is 85.92%. Comparing base (f562f90) to head (1a534e7).

❌ Your patch check has failed because the patch coverage (0.00%) is below the target coverage (80.00%). You can increase the patch coverage or adjust the target coverage.

Additional details and impacted files

@@            Coverage Diff             @@
##             main    #2977      +/-   ##
==========================================
- Coverage   85.93%   85.92%   -0.02%     
==========================================
  Files         725      725              
  Lines      275782   275792      +10     
==========================================
- Hits       236996   236975      -21     
- Misses      38262    38293      +31     
  Partials      524      524              

Components	Coverage Δ
otap-dataflow	87.05% <0.00%> (-0.02%)	⬇️
query_abstraction	80.61% <ø> (ø)
query_engine	89.57% <ø> (ø)
otel-arrow-go	52.45% <ø> (ø)
quiver	92.18% <0.00%> (-0.08%)	⬇️

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[AaronRM]

LGTM. Thanks @cijothomas!