[HUDI-8185] Handle Avro GenericData byte array comparison

[codope]

Change Logs

While building colstats for bytes field, we noticed that the comparison throws below exception:

java.lang.ClassCastException: [B cannot be cast to java.lang.Comparable

	at org.apache.avro.generic.GenericData.compare(GenericData.java:1263)
	at org.apache.avro.generic.GenericData.compare(GenericData.java:1148)
...

Byte arrays are not inherently comparable. So, we first need to wrap in ByteBuffer. This PR fixes the issue and adds a simple comparison test.

Impact

Fix byte array comparison (colstats is one use case).

Risk level (write none, low medium or high below)

low

Documentation Update

Describe any necessary documentation update if there is any new feature, config, or user-facing change. If not, put "none".

• The config description must be updated if new configs are added or the default value of the configs are changed
• Any new feature or user-facing change requires updating the Hudi website. Please create a Jira ticket, attach the
  ticket number here and follow the instruction to make
  changes to the website.

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:

• bcd917a Azure: SUCCESS

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