feat(metrics): remove percentiles from meta endpoint in Metrics API

[shellmayr]

• Add an empty Sequence option to defaults to remove percentiles from being return from metrics/meta as queryable operations in the Metrics API.
• If in the future, we want to turn on percentiles on a per-org-basis, this option can then be used to do that.

[codecov]

Codecov Report

All modified and coverable lines are covered by tests ✅

Project coverage is 77.92%. Comparing base (73d4ff9) to head (e0eb8ac).
Report is 56 commits behind head on master.

Additional details and impacted files

@@            Coverage Diff             @@
##           master   #70934      +/-   ##
==========================================
- Coverage   80.02%   77.92%   -2.10%     
==========================================
  Files        6509     6506       -3     
  Lines      291345   290198    -1147     
  Branches    50218    50225       +7     
==========================================
- Hits       233142   226135    -7007     
+ Misses      57769    57765       -4     
- Partials      434     6298    +5864     

Files	Coverage Δ
src/sentry/options/defaults.py	100.00% <100.00%> (ø)
...sentry/sentry_metrics/querying/metadata/metrics.py	82.69% <100.00%> (-3.36%)	⬇️
...c/sentry/sentry_metrics/querying/metadata/utils.py	100.00% <100.00%> (ø)
src/sentry/snuba/metrics/datasource.py	95.59% <100.00%> (+3.56%)	⬆️

... and 1572 files with indirect coverage changes