RFR: 8345144: Robot does not specify all causes of IllegalThreadStateException

[Alisen Chung]

When robot.autoWaitForIdle is set to true, all mouse and key-related methods when invoked on the EDT will throw java.lang.IllegalThreadStateException which is not in the Robot specification.

This PR updates the specification by adding warnings to avoid calling lengthy and delay-type methods on EDT and including exceptions thrown when autoWaitForIdle is set to true and mouse/key-handling methods are called on the EDT.

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

Commit messages:
 - init commit

Changes: https://git.openjdk.org/jdk/pull/22564/files
  Webrev: https://webrevs.openjdk.org/?repo=jdk&pr=22564&range=00
  Issue: https://bugs.openjdk.org/browse/JDK-8345144
  Stats: 32 lines in 1 file changed: 32 ins; 0 del; 0 mod
  Patch: https://git.openjdk.org/jdk/pull/22564.diff
  Fetch: git fetch https://git.openjdk.org/jdk.git pull/22564/head:pull/22564

PR: https://git.openjdk.org/jdk/pull/22564