[Java] add support so that deserializeJavaObject will throw an exception if the encoded data is of wrong type

[pjfanning]

Feature Request

I have an ignored test case in #2378 where Fory returns null instead of failing with an exception.
The test case passes with the wrong type in the input params.
If we like nulls (and I hate them), can we add a ForyBuilder option to allow users to opt out of ever getting nulls from deserializeJavaObject?

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[chaokunyang]

It should throw an exception instead of returning null, we need to fix it.