[SPARK-23871][ML][PYTHON]add python api for VectorAssembler handleInvalid

[huaxingao]

What changes were proposed in this pull request?

add python api for VectorAssembler handleInvalid

How was this patch tested?

Add doctest

[SparkQA]

Test build #89013 has finished for PR 21003 at commit 2b588ef.

• This patch fails PySpark unit tests.
• This patch merges cleanly.
• This patch adds the following public classes (experimental):
• class VectorAssembler(JavaTransformer, HasInputCols, HasOutputCol, HasHandleInvalid, JavaMLReadable,

[SparkQA]

Test build #89015 has finished for PR 21003 at commit 63959c9.

• This patch passes all tests.
• This patch merges cleanly.
• This patch adds no public classes.

[jkbradley]

LGTM
But would you mind making one fix in the doc here and in Scala? "Param for how to handle invalid data (NULL values)" should actually read "Param for how to handle invalid data (NULL and NaN values)"

Thanks!

[huaxingao]

@jkbradley Thanks for your comment. I will add "and NaN" in the doc.

[SparkQA]

Test build #89156 has finished for PR 21003 at commit 65e7a02.

• This patch passes all tests.
• This patch merges cleanly.
• This patch adds no public classes.

[jkbradley]

Merging with master
Thanks @huaxingao !

[huaxingao]

@jkbradley Thank you very much for your help!