Upgrade gradle to version 8.4. It also includes a change for adding task dependency for windows platform that was missed in [JDK-8314486](https://bugs.openjdk.org/browse/JDK-8314486)
------------- Commit messages: - chmod 644 gradlew - fix win task dependency - upgrade gradle to 8.4 Changes: https://git.openjdk.org/jfx/pull/1257/files Webrev: https://webrevs.openjdk.org/?repo=jfx&pr=1257&range=00 Issue: https://bugs.openjdk.org/browse/JDK-8314484 Stats: 261 lines in 7 files changed: 11 ins; 236 del; 14 mod Patch: https://git.openjdk.org/jfx/pull/1257.diff Fetch: git fetch https://git.openjdk.org/jfx.git pull/1257/head:pull/1257 PR: https://git.openjdk.org/jfx/pull/1257
