[BUGFIX] Record list: Fix condition for unlimited records

This patch fixes a condition that fails when a CSV export in the record
list is requested. The maximum limit of records is set, if `$iLimit` is
larger than 0 to avoid a `LIMIT 0` query.

Resolves: #82710
Related: #81651
Releases: master
Change-Id: I49779e4fa4b31e44d5457f90939e6f96a41e497b
Reviewed-on: https://review.typo3.org/54341


Tested-by: TYPO3com <no-reply@typo3.com>
Reviewed-by: Stephan Großberndt <stephan@grossberndt.de>
Reviewed-by: Henning Liebe <h.liebe@neusta.de>
Reviewed-by: Joerg Boesche <typo3@joergboesche.de>
Reviewed-by: Tymoteusz Motylewski <t.motylewski@gmail.com>
Tested-by: Tymoteusz Motylewski <t.motylewski@gmail.com>
Reviewed-by: Frank Naegler <frank.naegler@typo3.org>
Tested-by: Frank Naegler <frank.naegler@typo3.org>