[TASK] Avoid hard coded EM table in ReferenceIndex

ReferenceIndex has a hard coded "skip" for table
"tx_extensionmanager_domain_model_extension". This
is needed since the extbase based EM repository
depends on TCA being defined.

To get rid of this dependency, the patch turns it
by adding an event listener within ext:extensionmanager.

Resolves: #102947
Releases: main
Change-Id: Iacf8f0cbca42f57fe8ea7010580dd9278b550d1e
Reviewed-on: https://review.typo3.org/c/Packages/TYPO3.CMS/+/82663


Reviewed-by: Andreas Kienast <a.fernandez@scripting-base.de>
Tested-by: Andreas Kienast <a.fernandez@scripting-base.de>
Tested-by: Nikita Hovratov <nikita.h@live.de>
Reviewed-by: Nikita Hovratov <nikita.h@live.de>
Tested-by: core-ci <typo3@b13.com>