[HUDI-5244] Fix bugs in schema evolution client with lost operation field and not found schema

[trushev]

Change Logs

This PR fixes 2 issues in schema evolution client api:

1. Lost operation field in avro schema
2. Not found schema for table

org.apache.hudi.exception.HoodieException: cannot find schema for current table: /tmp/hudi
	at org.apache.hudi.client.BaseHoodieWriteClient.getInternalSchemaAndMetaClient(BaseHoodieWriteClient.java:1767)
	at org.apache.hudi.client.BaseHoodieWriteClient.addColumn(BaseHoodieWriteClient.java:1673)
	at org.apache.hudi.sink.TestWriteCopyOnWrite.test(TestWriteCopyOnWrite.java:454)

Introduced new test TestSchemaEvolutionClientfor schema evolution client api.

Flink schema evolution #5830 requires these fixes

Impact

Fixed lost operation field in avro schema and not found schema for table

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:

• 146e298 Azure: SUCCESS

Bot commands

@hudi-bot supports the following commands:

• @hudi-bot run azure re-run the last Azure build

[xiarixiaoyao]

LGTM
@trushev
Does Spark have this problem？

[trushev]

LGTM @trushev Does Spark have this problem？

"Not found schema for table" -- no it is just java client api bug
"Lost operation field in avro schema" -- I believe yes because saveInternalSchema is used in spark as well as in flink

[trushev]

@xiarixiaoyao
This PR have been merged right after #7250 which consists of conflicted code removing HoodieJavaClientTestBase
Need to revert and rework PR