RFR: 8376735: Update Eclipse projects to use JDK25

[Andy Goryachev]

Updates Eclipse configuration files and the monkey tester readme to jdk25 requirement introduced in 

[JDK-8370883](https://bugs.openjdk.org/browse/JDK-8370883) Update boot JDK to 25.0.1
[JDK-8376601](https://bugs.openjdk.org/browse/JDK-8376601) Bump minimum JDK version for JavaFX to JDK 25

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Commit messages:
 - jdk 25

Changes: https://git.openjdk.org/jfx/pull/2059/files
  Webrev: https://webrevs.openjdk.org/?repo=jfx&pr=2059&range=00
  Issue: https://bugs.openjdk.org/browse/JDK-8376735
  Stats: 6 lines in 3 files changed: 0 ins; 0 del; 6 mod
  Patch: https://git.openjdk.org/jfx/pull/2059.diff
  Fetch: git fetch https://git.openjdk.org/jfx.git pull/2059/head:pull/2059

PR: https://git.openjdk.org/jfx/pull/2059