Storages: fix a series of data race or local index related issues

[Lloyd-Pottiger]

What problem does this PR solve?

Issue Number: close #9961, close #9971, close #9972

Problem Summary:

What is changed and how it works?

1. We should not reuse anything which is not thread-safe between different queries, so do not reuse `ann_query_info` in unit tests.
2. Fix `FileCache::bgDownload` may still be running after `FileCache::shutdown`.
3. Suppress false positive alarm in `~shared_ptr`  and `re2::RE2::NumberOfCapturingGroups`.
4. Suppress alarm in `TiFlashStorageTestBasic::reload` which is only used in unit tests.
5. Fix data race between `DeltaMergeStore::segmentWaitDeltaLocalIndexReady` and `ColumnFilePersistedSet::updatePersistedColumnFilesAfterAddingIndex`
6. Fix data race between `DeltaValueSpace::flush` and `DeltaMergeStore::segmentEnsureDeltaLocalIndex`
7. Fix the existing index infoes in ColumnFileTiny are missed after add new indexes.
8. Do not add task into `LocalIndexerScheduler` if the DMFile is empty.
9. Fix delta data do not build the new added local indexes.

Check List

Tests

• Unit test
• Integration test
• Manual test (add detailed scripts or steps below)
• No code

Side effects

• Performance regression: Consumes more CPU
• Performance regression: Consumes more Memory
• Breaking backward compatibility

Documentation

• Affects user behaviors
• Contains syntax changes
• Contains variable changes
• Contains experimental features
• Changes MySQL compatibility

Release note

None

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[JaySon-Huang]

Fix the existing index infoes in ColumnFileTiny are missed after add new indexes.

I think you need a separate issue and fix PR for this problem

[Lloyd-Pottiger]

Fix the existing index infoes in ColumnFileTiny are missed after add new indexes.

I think you need a separate issue and fix PR for this problem

Open a separate issue, but IMO fix in this PR is ok, since other changes also need pick to release-8.5.