fix: offset location of connection ripple (google#6973)

Resolves issue google#6972

(cherry picked from commit 8ade261)

Author: NeilFraser

core/insertion_marker_manager.ts

@@ -186,11 +186,11 @@ export class InsertionMarkerManager {
     local.connect(closest);
     if (this.topBlock.rendered) {
       const inferiorConnection = local.isSuperior() ? closest : local;
-      blockAnimations.connectionUiEffect(inferiorConnection.getSourceBlock());
       const rootBlock = this.topBlock.getRootBlock();
 
       // bringToFront is incredibly expensive. Delay by at least a frame.
       requestAnimationFrame(() => {
+        blockAnimations.connectionUiEffect(inferiorConnection.getSourceBlock());
         setTimeout(() => {
           rootBlock.bringToFront();
         }, 0);