[BUGFIX] Correctly initialize fake-TSFE in Tx_Solr_Util

Correct initialization of fake-TSFE is needed for
conditions to work correctly.
Initialization done the same way as in
ConnectionManager::getTyposcriptTemplateByPage().

Change-Id: I1260c8b17cbccdf4e5aed2670fc170e79b40ed3b
Resolves: #63652
Releases: master, 3.0.x
Reviewed-on: http://review.typo3.org/35176
Reviewed-by: Stefan Neufeind <typo3.neufeind@speedpartner.de>
Tested-by: Stefan Neufeind <typo3.neufeind@speedpartner.de>