[jfx20] RFR: 8301832: InputMethodEvents are not enabled for text input controls

[Andy Goryachev]

On Tue, 7 Feb 2023 12:11:58 GMT, Kevin Rushforth <kcr at openjdk.org> wrote:

>> **Targeting jfx20 branch**
>> 
>> A fix for regression introduced by [JDK-8268877](https://bugs.openjdk.org/browse/JDK-8268877).
>> 
>> For IME to work, both `setOnInputMethodTextChanged()` and `setInputMethodRequests()` needs to be set, see Scene:2242.
>> 
>> The fix involves changing the code back to setting the control properties and doing so in the install() method.
>> 
>> Thank you Martin Fox  for noticing the issue!
>
> This is the same category of bug fix as many accessibility fixes, in that it requires entering a special mode on your computer to test it using an existing test program like `HelloTextArea`. For this reason, I added a `noreg-hard` keyword to the JBS bug.

@kevinrushforth @aghaisas please re-review

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PR: https://git.openjdk.org/jfx/pull/1024