RFR: 8378297: Remove AppContext from several Swing component and related classes

[Phil Race]

Remove AppContext usage from several Swing classes that use it via  Swing utility (still used by other cases so can't remove that yet).

One ToolTipManager test for the AppContext is removed.

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Commit messages:
 - 8378297

Changes: https://git.openjdk.org/jdk/pull/29830/files
  Webrev: https://webrevs.openjdk.org/?repo=jdk&pr=29830&range=00
  Issue: https://bugs.openjdk.org/browse/JDK-8378297
  Stats: 208 lines in 8 files changed: 15 ins; 151 del; 42 mod
  Patch: https://git.openjdk.org/jdk/pull/29830.diff
  Fetch: git fetch https://git.openjdk.org/jdk.git pull/29830/head:pull/29830

PR: https://git.openjdk.org/jdk/pull/29830