RFR: 6681958: Maximization state of JInternalFrames is corrupted by WindowsDesktopManager [v2]

[Prasanta Sadhukhan]

> Issue is if one internal frame is open and maximized and another internal frame is created which is initialized with `setMaximum(true)` then after opening the second internal frame the new internal frame is opened as non-maximized
> 
> The fix makes sure the 2nd internal frame remains maximised if it is set with maximized attrbute, that is
> If the current frame is maximized, transfer that attribute to the frame being activated. 
> which is also mentioned in this comment 
> https://github.com/openjdk/jdk/blob/46ee8d550e42f756dd04fa67ed549c93b632df77/src/java.desktop/windows/classes/com/sun/java/swing/plaf/windows/WindowsDesktopManager.java#L70-L71
>  
> This code seems to be added for [JDK-5036083](https://bugs.openjdk.org/browse/JDK-5036083) which expects
> When a frame is maximized and then minimized, the next frame should NOT be maximized.
> 
> It still honours that fix as the test mentioned in JDK-5036083 works as expected as mentioned above along with fixing the present issue..

Prasanta Sadhukhan has updated the pull request incrementally with one additional commit since the last revision:

  Test fix

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

Changes:
  - all: https://git.openjdk.org/jdk/pull/28502/files
  - new: https://git.openjdk.org/jdk/pull/28502/files/54aa3b61..c6cdaaff

Webrevs:
 - full: https://webrevs.openjdk.org/?repo=jdk&pr=28502&range=01
 - incr: https://webrevs.openjdk.org/?repo=jdk&pr=28502&range=00-01

  Stats: 1 line in 1 file changed: 1 ins; 0 del; 0 mod
  Patch: https://git.openjdk.org/jdk/pull/28502.diff
  Fetch: git fetch https://git.openjdk.org/jdk.git pull/28502/head:pull/28502

PR: https://git.openjdk.org/jdk/pull/28502