[FOLLOWUP][TASK] Streamline ExtensionManagementUtility

Remove a misleading match from the Extension Scanner matcher
configuration that caused a strong match for a false positive.

Also add a forgotten deprecation.

Resolves: #82899
Releases: master
Change-Id: Ibbada6e3f221aed64b98bfccdd3d77502a7cd7d9
Reviewed-on: https://review.typo3.org/55170


Tested-by: TYPO3com <no-reply@typo3.com>
Reviewed-by: Christian Kuhn <lolli@schwarzbu.ch>
Tested-by: Christian Kuhn <lolli@schwarzbu.ch>
Reviewed-by: Reiner Teubner <rteubner@me.com>
Tested-by: Reiner Teubner <rteubner@me.com>
Reviewed-by: Sebastian Fischer <typo3@evoweb.de>
Reviewed-by: Andreas Fernandez <a.fernandez@scripting-base.de>
Tested-by: Andreas Fernandez <a.fernandez@scripting-base.de>