Limit frontend article category edit to Publishers and up

[infograf768]

Pull Request for Issue #24626

Summary of Changes

Instead of preventing anyone from modifying the category when editing an already saved article in frontend, this PR allows Publishers and up to do so (edit.state).

Testing Instructions

Create an article as Author in frontend (category can be chosen until article saved).
Publish the article (through backend or frontend)
Log as author and edit the article: the category field is greyed.
Log as Publisher and edit the article: the category field is also greyed.

Patch and retest

After patch

When logging as Publisher, the category field can be modified.

Note

We could also add a new parameter as proposed here:
#24216 (comment)

Which would re-instate as default editing category by Author (edit.own)

[franz-wohlkoenig]

@ThomasK0lasa please test.

[ThomasK0lasa]

Works as supposed to. Thank You. :)

[franz-wohlkoenig]

@ThomasK0lasa please mark your test as successfully > https://docs.joomla.org/Testing_Joomla!_patches#Recording_test_results

[ThomasK0lasa]

I have tested this item ✅ successfully on 83d63df

Tested successfully.

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[franz-wohlkoenig]

@Webdongle please test.

[Webdongle]

I have tested this item ✅ successfully on 0045fc3

Sorry saw the word 'Merged' didn't see it was referring to the other issue. Yes tested OK for me. Thanks for listening.

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[franz-wohlkoenig]

@infograf768 can this be RTC or need retest of @ThomasK0lasa ?

[Quy]

RTC

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[HLeithner]

@ron4mac does this work for you too?

[HLeithner]

thx