[SPARK-44107][CONNECT][PYTHON] Hide unsupported Column methods from auto-completion

[zhengruifeng]

What changes were proposed in this pull request?

Hide unsupported Column method _jc from auto-completion, it is already handled in __getattr__, see

spark/python/pyspark/sql/connect/column.py

Lines 445 to 454 in e6c6d44

	def __getattr__(self, item: Any) -> "Column":
	if item == "_jc":
	raise PySparkAttributeError(
	error_class="JVM_ATTRIBUTE_NOT_SUPPORTED", message_parameters={"attr_name": "_jc"}
	)
	if item.startswith("__"):
	raise PySparkAttributeError(
	error_class="ATTRIBUTE_NOT_SUPPORTED", message_parameters={"attr_name": item}
	)
	return self[item]

Why are the changes needed?

no need to show unsupported methods

Does this PR introduce any user-facing change?

yes

before this PR:

after this PR:

How was this patch tested?

existing UTs and manually check in ipython

[zhengruifeng]

merged to master, thank you @ueshin @HyukjinKwon