[!!!][TASK] Handle SoftRefParser without references

The softRefParser logic previously contained its own
factory within BackendUtility with a magic singleton
logic built into "$GLOBALS['T3_VAR']['softRefParser']".

This has changed by building custom Singleton
Interfaces instead.

Resolves: #88638
Releases: master
Change-Id: I43f30c18b27f75672fbc2b5cc2cbdb725eb6f44a
Reviewed-on: https://review.typo3.org/c/Packages/TYPO3.CMS/+/61124


Tested-by: TYPO3com <noreply@typo3.com>
Tested-by: Daniel Goerz <daniel.goerz@posteo.de>
Tested-by: Andreas Fernandez <a.fernandez@scripting-base.de>
Reviewed-by: Daniel Goerz <daniel.goerz@posteo.de>
Reviewed-by: Andreas Fernandez <a.fernandez@scripting-base.de>