style: Use space after catch

We are currently inconsistent with whether or not to put a space
after catch clauses. While the predominant style is to omit it,
that's inconsistent with the style we use for any other statement.
There's not really a good reason to stick with it, so switch to
the style gjs/eslint default to.

https://gitlab.gnome.org/GNOME/gnome-shell/merge_requests/607

js/ui/ibusCandidatePopup.js

@@ -181,7 +181,7 @@ var CandidatePopup = class CandidatePopup {
                 let window = global.display.focus_window.get_compositor_private();
                 this._setDummyCursorGeometry(window.x + x, window.y + y, w, h);
             });
-        } catch(e) {
+        } catch (e) {
             // Only recent IBus versions have support for this signal
             // which is used for wayland clients. In order to work
             // with older IBus versions we can silently ignore the