seat: Fix reloading cursor theme after change

This reverts commit afde6369
"seat: avoid unneeded reloading xcursor theme".
Always avoiding to reload the xcursor theme prevents reloading the
cursor even when this is desired. Instead seat_configure_xcursor
can determine whether a full reload is necessary.

To stay with the spirit of the reverted change, cursors are only fully
reloaded, if the theme has changed.

Fixes #6931

sway/input/seat.c

@@ -803,9 +803,7 @@ static void seat_apply_input_mapping(struct sway_seat *seat,
 
 static void seat_configure_pointer(struct sway_seat *seat,
 		struct sway_seat_device *sway_device) {
-	if ((seat->wlr_seat->capabilities & WL_SEAT_CAPABILITY_POINTER) == 0) {
 	seat_configure_xcursor(seat);
-	}
 	wlr_cursor_attach_input_device(seat->cursor->cursor,
 		sway_device->input_device->wlr_device);
 	wl_event_source_timer_update(
@@ -1069,7 +1067,7 @@ void seat_configure_xcursor(struct sway_seat *seat) {
 			sway_log(SWAY_ERROR,
 				"Cannot create XCursor manager for theme '%s'", cursor_theme);
 		}
-	}
+
 
 		for (int i = 0; i < root->outputs->length; ++i) {
 			struct sway_output *sway_output = root->outputs->items[i];
@@ -1089,6 +1087,7 @@ void seat_configure_xcursor(struct sway_seat *seat) {
 		cursor_set_image(seat->cursor, "default", NULL);
 		wlr_cursor_warp(seat->cursor->cursor, NULL, seat->cursor->cursor->x,
 			seat->cursor->cursor->y);
+	}
 }
 
 bool seat_is_input_allowed(struct sway_seat *seat,