[jdk21u-dev] RFR: 8361067: Test ExtraButtonDrag.java requires frame.dispose in finally block

[Goetz Lindenmaier]

I backport this for parity with 21.0.11-oracle.

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Commit messages:
 - Backport 21efd25c111726a00630e6ee9b316102f5ae41fb

Changes: https://git.openjdk.org/jdk21u-dev/pull/2600/files
  Webrev: https://webrevs.openjdk.org/?repo=jdk21u-dev&pr=2600&range=00
  Issue: https://bugs.openjdk.org/browse/JDK-8361067
  Stats: 147 lines in 1 file changed: 59 ins; 23 del; 65 mod
  Patch: https://git.openjdk.org/jdk21u-dev/pull/2600.diff
  Fetch: git fetch https://git.openjdk.org/jdk21u-dev.git pull/2600/head:pull/2600

PR: https://git.openjdk.org/jdk21u-dev/pull/2600