Add right-click cancel binding (#2244)

Co-authored-by: attax <attax@ws01.ganjagaming.de>

Author: alex190291

source/keyb.c

@@ -208,10 +208,10 @@ ActionBindingEntry rofi_bindings[] = {
     {.id = TOGGLE_SORT,
      .name = "kb-toggle-sort",
      .binding = "Alt+grave",
-     .comment = "Toggle sort"},
+    .comment = "Toggle sort"},
     {.id = CANCEL,
      .name = "kb-cancel",
-     .binding = "Escape,Control+g,Control+bracketleft",
+     .binding = "Escape,Control+g,Control+bracketleft,MouseSecondary",
      .comment = "Quit rofi"},
     {.id = CUSTOM_1,
      .name = "kb-custom-1",