fix(blooms): Do not fail requests when fetching metas from cache fails #12838
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What this PR does / why we need it:
The bloom shipper uses metas to resolve available blocks. Metas are fetched from cache, and if not available from object storage.
If fetching metas from cache fails, e.g. timeout, the request should not fail, but proceed as if no metas were available.
Checklist
CONTRIBUTING.md
guide (required)docs/sources/setup/upgrade/_index.md
production/helm/loki/Chart.yaml
and updateproduction/helm/loki/CHANGELOG.md
andproduction/helm/loki/README.md
. Example PRdeprecated-config.yaml
anddeleted-config.yaml
files respectively in thetools/deprecated-config-checker
directory. Example PR