RFR: 8150564: Migrate useful ExtendedRobot methods into awt.Robot [v8]

[Damon Nguyen]

> Some useful methods (click, glide, waitForIdle, type) in ExtendedRobot should be migrated into Robot itself so that ExtendedRobot can be removed in the future. The tests using these ExtendedRobot methods will be handled separately.

Damon Nguyen has updated the pull request incrementally with one additional commit since the last revision:

  Remove wrong PL change

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Changes:
  - all: https://git.openjdk.org/jdk/pull/26969/files
  - new: https://git.openjdk.org/jdk/pull/26969/files/a744389b..4e2afa45

Webrevs:
 - full: https://webrevs.openjdk.org/?repo=jdk&pr=26969&range=07
 - incr: https://webrevs.openjdk.org/?repo=jdk&pr=26969&range=06-07

  Stats: 1 line in 1 file changed: 0 ins; 1 del; 0 mod
  Patch: https://git.openjdk.org/jdk/pull/26969.diff
  Fetch: git fetch https://git.openjdk.org/jdk.git pull/26969/head:pull/26969

PR: https://git.openjdk.org/jdk/pull/26969