RFR: 8376423: Test javax/swing/plaf/metal/MetalUtils/bug6190373.java failed: ClassCastException: class java.lang.Character cannot be cast to class javax.swing.Painter [v3]

[Phil Race]

> AppContext is removed from Swing LAF state. Tests which require it are deleted.

Phil Race has updated the pull request incrementally with one additional commit since the last revision:

  8376423

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Changes:
  - all: https://git.openjdk.org/jdk/pull/29437/files
  - new: https://git.openjdk.org/jdk/pull/29437/files/8dcdc6fa..aeef9323

Webrevs:
 - full: https://webrevs.openjdk.org/?repo=jdk&pr=29437&range=02
 - incr: https://webrevs.openjdk.org/?repo=jdk&pr=29437&range=01-02

  Stats: 3 lines in 1 file changed: 2 ins; 0 del; 1 mod
  Patch: https://git.openjdk.org/jdk/pull/29437.diff
  Fetch: git fetch https://git.openjdk.org/jdk.git pull/29437/head:pull/29437

PR: https://git.openjdk.org/jdk/pull/29437