RFR: 8314486: JavaFX build uses deprecated features that will be removed in gradle 8

[Ambarish Rapte]

This is gradle only change, which fixes few warnings that are observed with gradle 7.6 and which eventually result to an error with gradle 8.3
With this change the warnings get fixed and no error is observed with gradle 8.3
Verified that several gradle tasks(all, sdk, javadoc, apps, shims, test) complete without any failure.

Warnings that are fixed:
1. The SourceDirectorySet.outputDir property has been deprecated. This is scheduled to be removed in Gradle 8.0. Please use the classesDirectory property instead. See https://docs.gradle.org/7.6/dsl/org.gradle.api.file.SourceDirectorySet.html#org.gradle.api.file.SourceDirectorySet:outputDir for more details.
-> As per this [7.x to 8.0 upgrade guide](https://docs.gradle.org/8.0/userguide/upgrading_version_7.html#sourcedirectoryset_api_cleanup) outputDir should be replaced with `destinationDirectory`

2. The AbstractCompile.destinationDir property has been deprecated. This is scheduled to be removed in Gradle 8.0. Please use the destinationDirectory property instead. Consult the upgrading guide for further information: https://docs.gradle.org/7.6/userguide/upgrading_version_7.html#compile_task_wiring
-> As per the above doc, replacing `destinationDir` with `destinationDirectory` resolves the warning

3. Various dependency warnings like one below:
Gradle detected a problem with the following location: '<path>/rt/modules/javafx.base/build/module-classes'. Reason: Task ':base:modularJarStandaloneMac' uses this output of task ':base:buildModuleMac' without declaring an explicit or implicit dependency. This can lead to incorrect results being produced, depending on what order the tasks are executed. Please refer to https://docs.gradle.org/7.6/userguide/validation_problems.html#implicit_dependency for more details about this problem.
-> There are several such warning messages observed.
-> Each warning required an explicit inclusion of dependency. All dependency changes are to fix this warning.

An easy way to review would be.
1. Build with gradle 7.6 (using  `--warning-mode all`  gradle option)
1.1 All above warnings can be observed and build completes successfully.

2. Build with gradle 8.3 (using  `--warning-mode all`  gradle option)
2.1 Without this change build would fail citing above warnings as errors
2.2 With this change build completes successfully and above warnings do not occur

-------------

Commit messages:
 - remove gradle7.6 warnings

Changes: https://git.openjdk.org/jfx/pull/1256/files
 Webrev: https://webrevs.openjdk.org/?repo=jfx&pr=1256&range=00
  Issue: https://bugs.openjdk.org/browse/JDK-8314486
  Stats: 54 lines in 1 file changed: 34 ins; 0 del; 20 mod
  Patch: https://git.openjdk.org/jfx/pull/1256.diff
  Fetch: git fetch https://git.openjdk.org/jfx.git pull/1256/head:pull/1256

PR: https://git.openjdk.org/jfx/pull/1256