RFR: 8375480: Remove usage of AppContext from javax/swing/text [v2]

[Prasanta Sadhukhan]

On Tue, 20 Jan 2026 20:25:24 GMT, Phil Race <prr at openjdk.org> wrote:

>> This PR removes usage of AppContext from classes under javax/swing/text.
>> Most of the uses were added in specific bug fixes 10-15 years ago but are now obsolete and the tests for those bugs need to be deleted too.
>
> Phil Race has updated the pull request incrementally with one additional commit since the last revision:
> 
>   8375350

Marked as reviewed by psadhukhan (Reviewer).

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PR Review: https://git.openjdk.org/jdk/pull/29259#pullrequestreview-3690314413