Use language constants in module table.

[Pinkeltje]

I find it very strange that module titles are fixed in English in module table. Would be much better in my opinion to change to language constants.

1. Inconsistency: Module content uses language constants (and translates properly), but module titles don't
2. User experience: For a CMS that prides itself on multilingual capabilities, hardcoded module titles seem like an oversight
3. Best practice: Core modules should use language constants like MOD_SAMPLEDATA_TITLE instead of database strings
4. Precedent: Other core components already use this pattern successfully

[brianteeman]

see #36954

[brianteeman]

also now that we have this PR #46671 I assume we can associate admin modules