unreal_bloom_selective 's `gui` not work.

[gonnavis]

Describe the bug

https://threejs.org/examples/?q=selective#webgl_postprocessing_unreal_bloom_selective 's gui not work.
If comment event.preventDefault();, the gui works, but don't know what other influences will be.

To Reproduce

Steps to reproduce the behavior:

1. Go to https://threejs.org/examples/?q=selective#webgl_postprocessing_unreal_bloom_selective
2. Click on gui's parameters
3. See error

Platform:

• Device: [Desktop]
• OS: [Windows]
• Browser: [Chrome]
• Three.js version: [dev, r128]

[Mugen87]

It's best to remove the call of preventDefault(). There are multiple examples with onPointerDown() event listeners and only webgl_postprocessing_unreal_bloom_selective seems to call preventDefault().

Do you want to create a PR with the fix? 😇

[gonnavis]

Sure! My pleasure. 😇