RFR: 8365180: Remove sun.awt.windows.WInputMethod.finalize() [v2]

[Phil Race]

> Remove finalize() from WInputMethod.java - it is used to free a native id.
> Also the reason dispose() didn't free it seems no longer relevant.
> Although I did see (when instrumenting) that dispose() was called when I disposed() the Frame referencing the IM,
> I don't know if I can be sure that is always done. So safest to add the Disposer in case it isn't.

Phil Race has updated the pull request incrementally with one additional commit since the last revision:

  8365180

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Changes:
  - all: https://git.openjdk.org/jdk/pull/26706/files
  - new: https://git.openjdk.org/jdk/pull/26706/files/fc422aa0..3c8c9cb4

Webrevs:
 - full: https://webrevs.openjdk.org/?repo=jdk&pr=26706&range=01
 - incr: https://webrevs.openjdk.org/?repo=jdk&pr=26706&range=00-01

  Stats: 1 line in 1 file changed: 1 ins; 0 del; 0 mod
  Patch: https://git.openjdk.org/jdk/pull/26706.diff
  Fetch: git fetch https://git.openjdk.org/jdk.git pull/26706/head:pull/26706

PR: https://git.openjdk.org/jdk/pull/26706