Examples: Fix webgpu_compute_particles_fluid GUI (#31570)

Author: ycw

examples/webgpu_compute_particles_fluid.html

@@ -104,9 +104,6 @@
 					p2g1Kernel.count = value;
 					p2g2Kernel.count = value;
 					g2pKernel.count = value;
-					p2g1Kernel.updateDispatchCount();
-					p2g2Kernel.updateDispatchCount();
-					g2pKernel.updateDispatchCount();
 					particleMesh.count = value;
 					particleCountUniform.value = value;