chat: fix #1390, selection OOB

When the input field includes an unmatched " in the input-text, there's a
mismatch between the parsed command-args and the length of the text field,
causing text selection to be out of bounds. By bounding the new selection to a
maximum of the input text, this is avoided.

src/status_im/chat/handlers/input.cljs

@@ -388,7 +388,8 @@
               new-sel      (->> command-args
                                 (take (+ 3 arg-pos))
                                 (input-model/join-command-args)
-                                (count))
+                                count
+                                (min (count input-text)))
               ref          (get-in chat-ui-props [current-chat-id :input-ref])]
           (.setNativeProps ref (clj->js {:selection {:start new-sel :end new-sel}}))
           (dispatch [:update-text-selection new-sel]))))))