RFR: 8198626: java/awt/KeyboardFocusmanager/TypeAhead/TestDialogTypeAhead.html fails on mac [v2]

[Pankaj Bansal]

> Test java/awt/KeyboardFocusmanager/TypeAhead/TestDialogTypeAhead.html fails on mac fails on Mac. The test fails on my local machine (macOS BigSur) always and on mach5 also. The test uses Robot for mouse clicks and there is no delay or autoDelay set on Robot.
> 
> The fix adds set autoDelay on the robot. Along with this, some other cleanup is done. The test passes after the changes on my local mac and mach5 (Link in the JBS)

Pankaj Bansal has updated the pull request incrementally with two additional commits since the last revision:

 - Review comments
 - Review Comments

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Changes:
  - all: https://git.openjdk.java.net/jdk/pull/6273/files
  - new: https://git.openjdk.java.net/jdk/pull/6273/files/841ecaa8..c98c3793

Webrevs:
 - full: https://webrevs.openjdk.java.net/?repo=jdk&pr=6273&range=01
 - incr: https://webrevs.openjdk.java.net/?repo=jdk&pr=6273&range=00-01

  Stats: 4 lines in 1 file changed: 2 ins; 1 del; 1 mod
  Patch: https://git.openjdk.java.net/jdk/pull/6273.diff
  Fetch: git fetch https://git.openjdk.java.net/jdk pull/6273/head:pull/6273

PR: https://git.openjdk.java.net/jdk/pull/6273