fix(tag): handle scalar type_menu in massive updates

[rickserrat]

Checklist before requesting a review

• I have performed a self-review of my code.
• I have added tests that prove my fix is effective.
• I have updated the CHANGELOG with a short functional description of the fix.
• This change requires a documentation update.

Description

• Fixes Massive update of associated item types fails with TypeError #359 .
• Prevents a TypeError when updating tag associated item types through GLPI massive actions.
• Normalizes scalar type_menu values into an array before calling array_values() and encoding the value as JSON.
• Preserves the existing behavior when type_menu is already an array.
• Adds a regression test covering an update where type_menu is provided as a scalar string.

Testing

• Added TagTest::testUpdateAcceptsScalarTypeMenu().
• Verified PHP syntax for the modified and new files.
• Ran the PHPUnit test suite successfully.

Screenshots

Not applicable. This is a backend error handling fix.

[Rom1-B]

Functionally, it seems OK.
Can you rebase to resolve the conflicts
and then fix the lint issues?

[rickserrat]

Functionally, it seems OK. Can you rebase to resolve the conflicts and then fix the lint issues?

Thanks for the review.

I rebased the branch onto the latest main, resolved the conflicts, and fixed the PHP-CS-Fixer, Rector, and licence header issues.

The test was merged into the existing TagTest class and the test suite passes.