[HUDI-5233] Fix bug when InternalSchemaUtils.collectTypeChangedCols returns all columns

[trushev]

Change Logs

We need to override equals because the check intType1 == intType2 can return false.
Despite the fact that most subclasses of Type look like singleton with static field INSTANCE, they can still be created by deserializer. It means that the check below always returns true InternalSchemaUtils.java:

if (!schema.findType(f).equals(oldSchema.findType(f))) {

Impact

InternalSchemaUtils.collectTypeChangedCols returns only changed columns

Risk level

Low

Documentation Update

None

Contributor's checklist

• Read through contributor's guide
• Change Logs and Impact were stated clearly
• Adequate tests were added if applicable
• CI passed

[hudi-bot]

CI report:

• 53a80b0 Azure: SUCCESS

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