RFR: 8332901: Choice/SelectCurrentItemTest/SelectCurrentItemTest.java doesn't open popup on macOS

[Alexey Ivanov]

I looked at `java/awt/Choice/SelectCurrentItemTest/SelectCurrentItemTest.java`, ran it and noticed that the test does not open the popup of the `Choice` component on macOS 14.x.

If the popup does not open, the test does not verify anything — it always passes.

I refactored the test and added a mouse listener to the `Choice` component. If mouse click isn't registered, the test fails.

The updated test fails for me locally on macOS Sonoma 14.5. This is likely the result of [JDK-8322653](https://bugs.openjdk.org/browse/JDK-8322653): _[macos14] : Mouse clicks are not received within 3 pixels of the window boundary_.

The updated test passes on CI.

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Commit messages:
 - 8332901:

Changes: https://git.openjdk.org/jdk/pull/20601/files
  Webrev: https://webrevs.openjdk.org/?repo=jdk&pr=20601&range=00
  Issue: https://bugs.openjdk.org/browse/JDK-8332901
  Stats: 137 lines in 1 file changed: 62 ins; 38 del; 37 mod
  Patch: https://git.openjdk.org/jdk/pull/20601.diff
  Fetch: git fetch https://git.openjdk.org/jdk.git pull/20601/head:pull/20601

PR: https://git.openjdk.org/jdk/pull/20601