[5.2] Make it Optional to Save Response from the GET Request Task Routine

[ditsuke]

Addresses a concern from #36201.

Summary of Changes

• Saving responses from the GET Request is now optional and disabled by default.
• The saved result now uses the tmp_dir from the global configuration.

Testing Instructions

• Make a task G1 with the GET Request routine, keep "Save Response" disabled.
• Make another task G2 with "Save Response" enabled.
• Trigger the tasks either by waiting or by manually running from the list view.

Actual result BEFORE applying this Pull Request

• There is no option to not save the response.
• Response is saved in the tmp/ directory blind to the tmp_dir configuration.

Expected result AFTER applying this Pull Request

• There is an option to not save the response making retention opt-in. Response for the G1 task is not saved while response for the G2 task is saved.
• tmp_dir configuration is respected.

Documentation Changes Required

nil

[HLeithner]

This pull request has automatically rebased to 4.2-dev.

[HLeithner]

This pull request has been automatically rebased to 5.0-dev.

[MacJoom]

Needs to updated, Call to undefined method Joomla\Component\Scheduler\Administrator\Table\TaskTable::getCurrentUser()

[HLeithner]

Needs to updated, Call to undefined method Joomla\Component\Scheduler\Administrator\Table\TaskTable::getCurrentUser()

is fixed in 5.0 already, but this pr conflicts and has to be resolved

[HLeithner]

This pull request has been automatically rebased to 5.1-dev.

[HLeithner]

This pull request has been automatically rebased to 5.2-dev.