[BUGFIX] Page quickedit: Show correct page in BE after deleting a CE

Resolves: #72354
Releases: master, 7.6
Change-Id: I7e3060611c6e2cf020b00f2130eebec77f4c1ef9
Reviewed-on: https://review.typo3.org/45399


Reviewed-by: Daniel Goerz <ervaude@gmail.com>
Tested-by: Daniel Goerz <ervaude@gmail.com>
Reviewed-by: Markus Klein <markus.klein@typo3.org>
Tested-by: Markus Klein <markus.klein@typo3.org>