RFR: 8150564: Migrate useful ExtendedRobot methods into awt.Robot [v6]

[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:

  Add one missing source of default_delay value

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Changes:
  - all: https://git.openjdk.org/jdk/pull/26969/files
  - new: https://git.openjdk.org/jdk/pull/26969/files/d324ea9d..215ff9d3

Webrevs:
 - full: https://webrevs.openjdk.org/?repo=jdk&pr=26969&range=05
 - incr: https://webrevs.openjdk.org/?repo=jdk&pr=26969&range=04-05

  Stats: 1 line in 1 file changed: 0 ins; 0 del; 1 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