Fix for get_pref_managed() when a temporary configuration is used

[Tuttu]

When a temporary workflow is used, there is a logic error in the get_pref_managed function.

On line 1140, it tries to get the data-type of the preference setting that's being checked to transform any boolean to the string equivalent ("True" or "False"). However, this check is done on the main configuration plist instead of the temporary configuration plist. If the key is not present in the main plist, then it defaults to returning the value of a key that does not exists. This leads to an issue when checking for settings that are not in the main plist but that are in the temporary one.

This is fixed by checking the good plist if a temporary workflow is used and that the override key is set.