RFR: 8367045: [Linux] Dead keys not working [v2]

[Thiago Milczarek Sayao]

> The bug report is on Linux Mint which does not use ibus (the gnome default).
> 
> With this change, it continues to work on ibus, but also works works without it (on mint).

Thiago Milczarek Sayao has updated the pull request incrementally with one additional commit since the last revision:

  revert Unecessary changes

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

Changes:
  - all: https://git.openjdk.org/jfx/pull/1922/files
  - new: https://git.openjdk.org/jfx/pull/1922/files/33c284cc..d72196c4

Webrevs:
 - full: https://webrevs.openjdk.org/?repo=jfx&pr=1922&range=01
 - incr: https://webrevs.openjdk.org/?repo=jfx&pr=1922&range=00-01

  Stats: 9 lines in 1 file changed: 0 ins; 7 del; 2 mod
  Patch: https://git.openjdk.org/jfx/pull/1922.diff
  Fetch: git fetch https://git.openjdk.org/jfx.git pull/1922/head:pull/1922

PR: https://git.openjdk.org/jfx/pull/1922