floating: Throttle resizes

src/shell/layout/floating/grabs/resize.rs

@@ -120,7 +120,9 @@ impl ResizeSurfaceGrab {
             },
             self.last_window_size.as_global(),
         ));
-        self.window.configure();
+        if self.window.latest_size_committed() {
+            self.window.configure();
+        }
 
         false
     }

src/shell/layout/floating/mod.rs

@@ -990,7 +990,9 @@ impl FloatingLayout {
             geo.as_local()
                 .to_global(self.space.outputs().next().unwrap()),
         );
-        mapped.configure();
+        if mapped.latest_size_committed() {
+            mapped.configure();
+        }
 
         true
     }