RFR: 4346610: Adding JSeparator to JToolBar "pushes" buttons added after separator to edge

[Tejesh R]

On Thu, 27 Jul 2023 14:30:23 GMT, Prasanta Sadhukhan <psadhukhan at openjdk.org> wrote:

> Adding buttons in a JToolBar after a JSeparator will push the button to the far right of the frame instead of just after the separator
> 
> ![image](https://github.com/openjdk/jdk/assets/43534309/7fcad657-493f-4370-b046-b31c212a8aa7)
> 
> This is because BasicSeparatorUI does not define a maximum size. This leads to the separator getting all the extra width.
> Fix is made to limit the separator's maximum size to the preferred size of corresponding orientation (i.e. width for VERTICAL and height for HORIZONTAL)

Fix is working as expected.

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Marked as reviewed by tr (Committer).

PR Review: https://git.openjdk.org/jdk/pull/15054#pullrequestreview-1556926141