br: avoid too many warning logs after update schema version (#43416)

[ti-chi-bot]

This is an automated cherry-pick of #43416

What problem does this PR solve?

Issue Number: close #43402

Problem Summary:
after log restore, there are many warning logs, see the issue.

What is changed and how it works?

Add a diffKey whose regenerateSchemaMap is true to trigger full load schemas.

Check List

Tests

• Unit test
• Integration test
• Manual test (add detailed scripts or steps below)
  If modify the 64 + ... to 6 to trigger loadSchemaDiff, the log would print that as follows:

[2023/05/08 15:46:48.758 +08:00] [ERROR] [domain.go:249] ["failed to load schema diff"] [error="Meets a schema diff with RegenerateSchemaMap flag"] [errorVerbose="Meets a schema diff with RegenerateSchemaMap flag\ngithub.com/pingcap/tidb/domain.(*Domain).tryLoadSchemaDiffs\n\t/root/tidb/domain/domain.go:421\ngithub.com/pingcap/tidb/domain.(*Domain).loadInfoSchema\n\t/root/tidb/domain/domain.go:236\ngithub.com/pingcap/tidb/domain.(*Domain).Reload\n\t/root/tidb/domain/domain.go:556\ngithub.com/pingcap/tidb/domain.(*Domain).loadSchemaInLoop\n\t/root/tidb/domain/domain.go:862\ngithub.com/pingcap/tidb/domain.(*Domain).Init.func3\n\t/root/tidb/domain/domain.go:1181\ngithub.com/pingcap/tidb/util.(*WaitGroupEnhancedWrapper).Run.func1\n\t/root/tidb/util/wait_group_wrapper.go:96\nruntime.goexit\n\t/usr/local/go/src/runtime/asm_amd64.s:1598"] [stack="github.com/pingcap/tidb/domain.(*Domain).loadInfoSchema\n\t/root/tidb/domain/domain.go:249\ngithub.com/pingcap/tidb/domain.(*Domain).Reload\n\t/root/tidb/domain/domain.go:556\ngithub.com/pingcap/tidb/domain.(*Domain).loadSchemaInLoop\n\t/root/tidb/domain/domain.go:862\ngithub.com/pingcap/tidb/domain.(*Domain).Init.func3\n\t/root/tidb/domain/domain.go:1181\ngithub.com/pingcap/tidb/util.(*WaitGroupEnhancedWrapper).Run.func1\n\t/root/tidb/util/wait_group_wrapper.go:96"]
[2023/05/08 15:46:48.785 +08:00] [INFO] [domain.go:271] ["full load InfoSchema success"] [currentSchemaVersion=2908] [neededSchemaVersion=2914] ["start time"=29.410245ms]
[2023/05/08 15:46:48.787 +08:00] [INFO] [domain.go:586] ["full load and reset schema validator"]

• 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

Please refer to Release Notes Language Style Guide to write a quality release note.

None

[ti-chi-bot]

[REVIEW NOTIFICATION]

This pull request has been approved by:

• 3pointer
• Leavrth

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[Leavrth]

/merge

[ti-chi-bot]

This pull request has been accepted and is ready to merge.

Commit hash: 55dd2c9

[Leavrth]

/retest

[Leavrth]

/retest

[Leavrth]

/retest