RFR: 8375573: JTable ignores setPreferredWidth during initial layout when AUTO_RESIZE_LAST_COLUMN is enabled

[Prasanta Sadhukhan]

AUTO_RESIZE_LAST_COLUMN handling was done in [JDK-8234071](https://bugs.openjdk.org/browse/JDK-8234071) but it didn't honour the preferred width if it is already been set for each column so when layouting is done, it only sees the `resizingColumn` 
is set to AUTO_RESIZE_LAST_COLUMN and adjust only the last column and distribute width equally to all other column.

Fix is made to honour the user-set preferred column width even if auto-resize mode is set to LAST_COLUMN

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Commit messages:
 - jcheck
 - 8375573: JTable ignores setPreferredWidth during initial layout when AUTO_RESIZE_LAST_COLUMN is enabled
 - 8375573: JTable ignores setPreferredWidth during initial layout when AUTO_RESIZE_LAST_COLUMN is enabled

Changes: https://git.openjdk.org/jdk/pull/29291/files
  Webrev: https://webrevs.openjdk.org/?repo=jdk&pr=29291&range=00
  Issue: https://bugs.openjdk.org/browse/JDK-8375573
  Stats: 102 lines in 2 files changed: 100 ins; 0 del; 2 mod
  Patch: https://git.openjdk.org/jdk/pull/29291.diff
  Fetch: git fetch https://git.openjdk.org/jdk.git pull/29291/head:pull/29291

PR: https://git.openjdk.org/jdk/pull/29291