RFR: 8356803: Test TextLayout/TestControls fails on windows & linux: line and paragraph separator show non-zero advance

[Daniel Gredler]

Per discussion in JBS, adds the following chars to the list of ignorable whitespace chars: U+000B (Vertical Tab), U+000C (Form Feed), U+0085 (Next Line), U+2028 (Line Separator), U+2029 (Paragraph Separator).

Adds the necessary testing in pre-existing automated test class `test/jdk/java/awt/font/TextLayout/FormatCharAdvanceTest.java`.

Removes now-unnecessary manual test `test/jdk/java/awt/font/TextLayout/TestControls.java`.

The `test/jdk/java/awt/font`, `test/jdk/java/awt/print` and `test/jdk/java/awt/Graphics2D/DrawString` tests all pass for me locally on Windows, Linux and macOS.

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Commit messages:
 - Add missing ignorable whitespace chars, add (automated) tests

Changes: https://git.openjdk.org/jdk/pull/25560/files
  Webrev: https://webrevs.openjdk.org/?repo=jdk&pr=25560&range=00
  Issue: https://bugs.openjdk.org/browse/JDK-8356803
  Stats: 215 lines in 3 files changed: 40 ins; 161 del; 14 mod
  Patch: https://git.openjdk.org/jdk/pull/25560.diff
  Fetch: git fetch https://git.openjdk.org/jdk.git pull/25560/head:pull/25560

PR: https://git.openjdk.org/jdk/pull/25560