RFR: 8242616: Regression: RTL - TextField Cursor Movement Via Keyboard

[Karthik P K]

On Fri, 25 Aug 2023 11:41:22 GMT, Karthik P K <kpk at openjdk.org> wrote:

> The old logic for cursor movement was buggy when both RTL and LTR text was present in the TextField. Used character BreakIterator instead of finding the character index using hitTest.
> 
> Added system test to validate the fix.

The fix is similar to the solution proposed by @andy-goryachev-oracle in [PR#1220](https://github.com/openjdk/jfx/pull/1220) hence added as contributor.

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PR Comment: https://git.openjdk.org/jfx/pull/1222#issuecomment-1693229138