feat(schema): Migrate HoodieFileGroupReader and related classes to use HoodieSchema

[the-other-tim-brown]

Describe the issue this Pull Request addresses

Addresses #17469
The HoodieFileGroupReader is our main reader abstraction but it is still using the Avro schema instead of the internal HoodieSchema.

Summary and Changelog

• Updates the HoodieFileGroupReader and FileGroupReaderSchemaHandler to operate solely on HoodieSchema instead of the Avro schema class.
• Updates callers to pass in HoodieSchema. If the caller requires some schema manipulation or fetching before the call to the HoodieFileGroupReader, this is also updated to use HoodieSchema

Impact

Migrates core reader paths to use new HoodieSchema

Risk Level

Low

Documentation Update

Contributor's checklist

• Read through contributor's guide
• Enough context is provided in the sections above
• Adequate tests were added if applicable

[hudi-bot]

CI report:

• af47b8f UNKNOWN
• 9a2446d Azure: FAILURE
• 467eac4 Azure: PENDING

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