fix: improve structured metadata label normalization performance #17332
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What this PR does / why we need it:
Currently we normalize all the structured metadata label names to make them prometheus safe during pipeline execution, this results in us running the normalization code again and again for the same labels.
This PR moves this normalization to when we deserialize the interned string data so it is only done one time.
Which issue(s) this PR fixes:
Fixes #
Special notes for your reviewer:
Checklist
CONTRIBUTING.md
guide (required)feat
PRs are unlikely to be accepted unless a case can be made for the feature actually being a bug fix to existing behavior.docs/sources/setup/upgrade/_index.md
deprecated-config.yaml
anddeleted-config.yaml
files respectively in thetools/deprecated-config-checker
directory. Example PR