What problem does this PR solve?

Issue Number: ref #9032

Problem Summary:

What is changed and how it works?

Pick https://github.com/tidbcloud/tiflash-cse/pull/283 and https://github.com/tidbcloud/tiflash-cse/pull/300

• Unify the logic of generateLocalIndexInfos and initLocalIndexInfos
  • Print 1 logging for the vector index added/dropped/existing in one table instead. This can avoid the flood of logging when tiflash restart with lots of table with vector index defined
  • Support drop the vector index defined on ColumnInfo after the Column has been dropped in TiDB
• Add more ut in the DeltaMergeStore read level
• vector search fallback when top_k = max uint32

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