[5.1] Fix SEF redirect while executing parseRule

[Fedik]

Summary of Changes

SEF plugin should not do redirect while parsing the URL.
Original PR:

• [5.1] SEF: Implementing trailing slash behavior #42702
• [5.1] SEF: Implementing index.php behavior #42704

Testing Instructions

Please re-test linked PRs, they should still work as before.

Actual result BEFORE applying this Pull Request

Works

Expected result AFTER applying this Pull Request

Works

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

Ping @Hackwar

[HLeithner]

Didn't we talked about a redirection queue somewhere?

[SniperSister]

I have tested this item ✅ successfully on 35f024e

I've tested the changes, works as described!

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_{This comment was created with the J!Tracker Application at issues.joomla.org/tracker/joomla-cms/42932.}

[Fedik]

Didn't we talked about a redirection queue somewhere?

Do not remember anything about it

[bembelimen]

Thx