RFR: 8307311: Timeouts on one macOS 12.6.1 host of two Swing JTableHeader tests [v2]

[Prasanta Sadhukhan]

> Issue was bug6889007.java was causing a timeout issue on mac system.  Although bug6889007.java fail with small test group with "Wrong cursor type" error, it could not reproduce bug6884066.java 
> The hang issue might be due to waitForIdle() being called in loop which will be calling sync() so replaced with delay..
> 
> Modified fix passed the suggested small test group `desktop_timeout ` several times in all platforms 
> in addition to several iterations of the test run in standalone mode in all platforms..

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

  remove delay

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

Changes:
  - all: https://git.openjdk.org/jdk/pull/14026/files
  - new: https://git.openjdk.org/jdk/pull/14026/files/85d4cf0f..36225b73

Webrevs:
 - full: https://webrevs.openjdk.org/?repo=jdk&pr=14026&range=01
 - incr: https://webrevs.openjdk.org/?repo=jdk&pr=14026&range=00-01

  Stats: 1 line in 1 file changed: 0 ins; 1 del; 0 mod
  Patch: https://git.openjdk.org/jdk/pull/14026.diff
  Fetch: git fetch https://git.openjdk.org/jdk.git pull/14026/head:pull/14026

PR: https://git.openjdk.org/jdk/pull/14026