RFR: 8371087: Remove unused dependency on jdk.unsupported from javafx.graphics [v2]

[Kevin Rushforth]

On Mon, 3 Nov 2025 16:31:46 GMT, Kevin Rushforth <kcr at openjdk.org> wrote:

>> This PR removes the unused dependency on `jdk.unsupported` from `javafx.graphics` as a followup to [JDK-8334137](https://bugs.openjdk.org/browse/JDK-8334137), which replaced the use of `sun.misc.Unsafe` with FFM in PR #1814. `sun.misc.Unsafe` was the only use of `jdk.unsupported`, so it can now be removed.
>
> Kevin Rushforth has updated the pull request incrementally with one additional commit since the last revision:
> 
>   Remove unneeded '-XDignore.symbol.file' option

I filed [JDK-8371157](https://bugs.openjdk.org/browse/JDK-8371157) to track replacing the obsolete usage of `sun.misc.BASE64Encoder` in the android dir.

I also filed [JDK-8371158](https://bugs.openjdk.org/browse/JDK-8371158) as a follow-on to investigate removing a workaround for setting javac options that is described as only being needed se we can set `-XDignore.symbol.file`.

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PR Comment: https://git.openjdk.org/jfx/pull/1957#issuecomment-3481559896