patch 8.2.1015: popup filter gets key with modifier prepended

Problem:    Popup filter gets key with modifier prepended when using
            modifyOtherKeys.
Solution:   Remove the shift modifier when it is included in the key, also
            when the Alt or Meta modifier is used.

src/version.c

@@ -754,6 +754,8 @@ static char *(features[]) =
 
 static int included_patches[] =
 {   /* Add new patch number below this line */
+/**/
+    1015,
 /**/
     1014,
 /**/