[BUGFIX] IRRE hide/unhide broken in master

hide/unhide is broken when inline record is not opened before

Change-Id: I05a2cb3add21a93e1c893664fa75ff6dfeab83d2
Resolves: #34303
Releases: 6.0, 4.7, 4.6, 4.5
Reviewed-on: http://review.typo3.org/10525
Reviewed-by: Ingo Renner
Tested-by: Ingo Renner
Reviewed-by: Sascha Egerer
Tested-by: Sascha Egerer
Reviewed-by: Tolleiv Nietsch
Tested-by: Tolleiv Nietsch