RFR: 8367376: Bad ButtonUI prevents other components from updating when system changes desktop properties [v9]

[Jeremy Wood]

> Previously:
> 
> If DesktopProperty#updateAllUIs threw an exception, we would never reset the update-pending property to false. This means any subsequent call to `updateUI()` would not attempt to call `updateAllUIs()`
> 
> With this change:
> Subsequent calls to DesktopProperty#updateUI() can still trigger at least one call to updateAllUIs().

Jeremy Wood has updated the pull request incrementally with one additional commit since the last revision:

  Update test/jdk/com/sun/java/swing/plaf/DesktopPropertyResetPendingFlagTest.java
  
  Co-authored-by: Alexey Ivanov <alexey.ivanov at oracle.com>

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

Changes:
  - all: https://git.openjdk.org/jdk/pull/27205/files
  - new: https://git.openjdk.org/jdk/pull/27205/files/39d4ad96..aa565ef3

Webrevs:
 - full: https://webrevs.openjdk.org/?repo=jdk&pr=27205&range=08
 - incr: https://webrevs.openjdk.org/?repo=jdk&pr=27205&range=07-08

  Stats: 2 lines in 1 file changed: 1 ins; 1 del; 0 mod
  Patch: https://git.openjdk.org/jdk/pull/27205.diff
  Fetch: git fetch https://git.openjdk.org/jdk.git pull/27205/head:pull/27205

PR: https://git.openjdk.org/jdk/pull/27205