misc information is not reset when full load info schema

[wjhuang2016]

Bug Report

Please answer these questions before submitting your issue. Thanks!

1. Minimal reproduce step (Required)

func (isd *Data) resetBeforeFullLoad(schemaVersion int64) {
	resetTableInfoResidentBeforeFullLoad(isd.tableInfoResident, schemaVersion)

	resetByIDBeforeFullLoad(isd.byID, schemaVersion)
	resetByNameBeforeFullLoad(isd.byName, schemaVersion)

	resetSchemaMapBeforeFullLoad(isd.schemaMap, schemaVersion)
	resetSchemaID2NameBeforeFullLoad(isd.schemaID2Name, schemaVersion)

	resetPID2TIDBeforeFullLoad(isd.pid2tid, schemaVersion)
}

resetBeforeFullLoad already handles some V2-related data, but the common data in misc is not handled.

2. What did you expect to see? (Required)

N/A

3. What did you see instead (Required)

N/A

4. What is your TiDB version? (Required)

master

[tiancaiamao]

close by #55229