RFR: 8353223: [Linux] - Maximized windows do not retain correct size when resized programmatically

[Thiago Milczarek Sayao]

When a window is maximized, if only the width or height is programmatically set, the window will retain its current maximized dimension (either height or width) as is, unless the other dimension is also explicitly set.

This is consistent with what Gtk does.

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Commit messages:
 - Restore unrelated line break
 - Forgot previous test
 - [Linux] - Maximized windows do not retain correct size when resized programmatically

Changes: https://git.openjdk.org/jfx/pull/1748/files
  Webrev: https://webrevs.openjdk.org/?repo=jfx&pr=1748&range=00
  Issue: https://bugs.openjdk.org/browse/JDK-8353223
  Stats: 11 lines in 1 file changed: 11 ins; 0 del; 0 mod
  Patch: https://git.openjdk.org/jfx/pull/1748.diff
  Fetch: git fetch https://git.openjdk.org/jfx.git pull/1748/head:pull/1748

PR: https://git.openjdk.org/jfx/pull/1748