[5.4] HTTP: Remove legacy code for Response calls

[Hackwar]

Summary of Changes

The Joomla HTTP framework package provides a magic method to access code, body and headers of a Response object. This way of accessing this data is considered legacy and will not work with the version 4 of the framework package anymore. This PR thus converts all of this to the correct calls to the respective methods. This change is fully backwards compatible and makes the code forward compatible to Joomla 6+. The only thing changing in Joomla 6.0 now will be how to get an HTTP object. This will be changed in the PR to update the dependencies in 6.0.

Testing Instructions

• Test saving the global configuration
• Install a language
• Update Joomla from 5.4 to a newer version
• Check the changelog of an extension update in the extension manager
• Load a menu item for a newsfeed in the frontend
• Test logging in with Yubikey MFA
• Run a request task in the scheduled tasks component

Alternatively, do a codereview.

In all cases, everything should work the same between the current code and after applying the changes.

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:

• No documentation changes for manual.joomla.org needed

[exlemor]

I have tested this item ✅ successfully on 368bf17

I have successfully tested this PR. Thanks @Hackwar for all of your hard work.

I did all of the tests mentioned and much more, but I could not test these 2:

• Check the changelog of an extension update in the extension manager - I uploaded and updated 10+ extensions but couldn't find a single 1 that used the Changelog column in Extensions Update Manager ;(. { is that because very few people know about it or because it doesn't work with non-stable versions? }

• Test logging in with Yubikey MFA = I don't have a Yubikey ;(

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[richard67]

I have tested this item ✅ successfully on 890b8c9

Code review: The changes made by this PR match the (deprecated) magic getters here: https://github.com/joomla-framework/http/blob/3.x-dev/src/Response.php#L38-L45

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[richard67]

RTC

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_{This comment was created with the J!Tracker Application at issues.joomla.org/tracker/joomla-cms/45825.}

[muhme]

✅ Final test before merge: Named tests, plus additional info:

• Enabled 'Log Almost Everything' and installed blog sample data
• Installed German language paket as extension from URL
• Installed mod_zitat_service_de_2.0.1.zip from URL and configured, update is offered and updated, see new version and checked is still working on frontend
• Configured to send email in successful task in GC, purged and see email
• Checked administrator/logs/*
• Updated back to 5.4-dev nightly build

Not tested:

• Yubikey – I don't have one

[muhme]

Thank you @Hackwar for your contribution. Thank you @richard67 and @exlemor for testing.