Sync terrain grid resize overlay when brush is inactive or tool is not 'select'

src/viewport-three/viewport-host.ts

@@ -2094,6 +2094,7 @@ export class ViewportHost {
 
     if (terrainBrushState === null || this.toolMode !== "select") {
       this.setTerrainBrushHover(null);
+      this.syncTerrainGridResizeOverlay();
       return;
     }