New: UI Note that Filters are for movie properties only

Co-authored-by: PearsonFlyer <john@theediguy.com>

Closes #11200

frontend/src/Components/Filter/CustomFilters/CustomFiltersModalContent.js

@@ -56,6 +56,8 @@ function CustomFiltersModalContent(props) {
             {translate('AddCustomFilter')}
           </Button>
         </div>
+        <br />
+        {translate('FilterMoviePropertiesOnlyNotFileWarning')}
       </ModalBody>
 
       <ModalFooter>

src/NzbDrone.Core/Localization/Core/en.json

@@ -698,6 +698,7 @@
   "FilterNotInNext": "not in the next",
   "FilterStartsWith": "starts with",
   "Filters": "Filters",
+  "FilterMoviePropertiesOnlyNotFileWarning": "Filters are available only for the properties of a movie, they are not available for properties of the file(s) you may have for that movie.",
   "FirstDayOfWeek": "First Day of Week",
   "Fixed": "Fixed",
   "Folder": "Folder",