[HUDI-9323] Remove unnecessary config copying

[yihua]

Change Logs

This PR revisits all places using the constructors, TypedProperties(Properties defaults) and HoodieConfig(Properties props), that involve copying the config values. Unnecessary config copying is removed. Detailed changes include:

• Makes TypedProperties(Properties defaults) and HoodieConfig(Properties props) protected and adds TypedProperties#copy and HoodieConfig#copy so that developers know these APIs can be costly;
• Removes usages of config copying where there is only config fetching and no modification to the configs (e.g., HoodieAvroKeyGeneratorFactory.createKeyGenerator, using ConfigUtils on properties, new KeyGeneratorType#getKeyGeneratorClassName API taking TypedProperties, etc.)

Impact

Avoids unnecessary config copying and simplifies config passing.

Risk level

none

Documentation Update

N/A

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:

• 638974c UNKNOWN
• b00e514 UNKNOWN
• 81d1f72 UNKNOWN
• 462b6fb UNKNOWN
• f801d77 UNKNOWN
• dff7444 UNKNOWN
• 6f9863e Azure: SUCCESS

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