Support partial update payload

current status

• OverwriteNonDefaultsWithLatestAvroPayload implement partial update behavior in combineAndGetUpdateValue method
• Spark sql also have a 'Merge into' syntax support partial update by ExpressionPayload,
• both OverwriteNonDefaultsWithLatestAvroPayload and ExpressionPayload can not handle partial update in preCombine method, so they can only support partial update with COW table

solution

make preCombine function also support partial update(need pass schema as parameter)