[BUGFIX] EXT:form - resolve numeric values in finishers

This fixes option parsing for finishers to return any kind of
numeric values within the form runtime or finisher variable provider.

Resolves: #82833
Releases: master, 8.7
Change-Id: I334fbd36e526823f07e57247bd63d412a3c3b0d6
Reviewed-on: https://review.typo3.org/54994


Tested-by: TYPO3com <no-reply@typo3.com>
Reviewed-by: Eugene Kenah Djomo <kdeugene@yahoo.fr>
Reviewed-by: Benni Mack <benni@typo3.org>
Tested-by: Benni Mack <benni@typo3.org>
Reviewed-by: Bjoern Jacob <bjoern.jacob@tritum.de>
Tested-by: Bjoern Jacob <bjoern.jacob@tritum.de>
Reviewed-by: Stefan Neufeind <typo3.neufeind@speedpartner.de>
Tested-by: Stefan Neufeind <typo3.neufeind@speedpartner.de>

typo3/sysext/form/Classes/Domain/Finishers/AbstractFinisher.php

@@ -205,7 +205,7 @@ abstract class AbstractFinisher implements FinisherInterface
                     );
                 }
             }
-            if (!is_string($value) && !is_int($value)) {
+            if (!is_string($value) && !is_numeric($value)) {
                 $value = '{' . $match[1] . '}';
             }
             return $value;