RFR: 8342787: Move misplaced TestTemplateAssertionPredicateWithTwoUCTs.java from src to test directory

[Aleksey Shipilev]

On Tue, 22 Oct 2024 07:17:32 GMT, Christian Hagedorn <chagedorn at openjdk.org> wrote:

> For some unknown reason, `TestTemplateAssertionPredicateWithTwoUCTs.java` ended up in the src directory instead of the test directory with [JDK-8342287](https://bugs.openjdk.org/browse/JDK-8342787). Maybe a patch application have gone wrong when moving the test to another checked out JDK repository. Anyway, this patch moves it to the correct place.
> 
> Thanks to @TheShermanTanker for spotting this!

Marked as reviewed by shade (Reviewer).

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PR Review: https://git.openjdk.org/jdk/pull/21629#pullrequestreview-2384228132