[7.0] Remove static methods from frontend modules

[Hackwar]

• I read the Generative AI policy and my contribution is either not created with the help of AI or is compatible with the policy and GNU/GPL 2 or later.

Summary of Changes

This PR removes static methods from the helpers of the frontend modules. The rest is removed in #47460.

Testing Instructions

Codereview

Link to documentations

Please select:

• Documentation link for docs.joomla.org:

• No documentation changes for docs.joomla.org needed

• Pull Request link for manual.joomla.org: [7.0] Removal of static helper methods from modules Manual#608

• No documentation changes for manual.joomla.org needed

[hans2103]

I have tested this item ✅ successfully on 2b27aee

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[ceford]

I have tested this item ✅ successfully on 2b27aee

Code review: I see no calls to ::getList() in J6 and I see that some of these items will be removed in 6 and others in 7. Looks OK in my limited experience!

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[richard67]

@Hackwar Any reasons why this PR is in draft mode? It has received 2 successful human tests meanwhile.

[vishalchincholi1]

I have tested this item 🔴 unsuccessfully on 2b27aee

Getting this error on locally while applying the patch
The file marked for modification does not exist: phpstan-baseline.neon

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[brianteeman]

@vishalchincholi1 if you try to test this PR via Joomla Patch Tester even with the latest Nightly Build, you will get the error: The file marked for modification does not exist: phpstan-baseline.neon Use the Download package instead :)

[brianteeman]

I have removed the unsuccessful test from @vishalchincholi1 as they had not tested the pr

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[RickR2H]

RTC

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[brianteeman]

@RickR2H please remove the RTC label. This PR is still in draft mode and it has conflicts that need to be resolved

[RickR2H]

Back to draft

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[github-actions]

This pull request has conflicts, please resolve those before we can evaluate the pull request.