[SPARK-41233][CONNECT][PYTHON] Add array_prepend to Spark Connect Python client

[ueshin]

What changes were proposed in this pull request?

This is a follow-up of #38947.

Add array_prepend function to Spark Connect Python client.

Why are the changes needed?

array_prepend was added at #38947 without Spark Connect Python client.

Does this PR introduce any user-facing change?

array_prepend will be available in Spark Connect Python client.

How was this patch tested?

Enabled the related test.

[zhengruifeng]

would you mind adding a simple test here?

spark/python/pyspark/sql/tests/connect/test_connect_function.py

Lines 1077 to 1089 in 149e020

	# test array_append
	self.assert_eq(
	cdf.select(CF.array_append(cdf.a, "xyz")).toPandas(),
	sdf.select(SF.array_append(sdf.a, "xyz")).toPandas(),
	)
	self.assert_eq(
	cdf.select(CF.array_append(cdf.a, CF.lit("ab"))).toPandas(),
	sdf.select(SF.array_append(sdf.a, SF.lit("ab"))).toPandas(),
	)
	self.assert_eq(
	cdf.select(CF.array_append(cdf.a, cdf.f)).toPandas(),
	sdf.select(SF.array_append(sdf.a, sdf.f)).toPandas(),
	)

[HyukjinKwon]

Merged to master.