ReferenceError: Can't find variable: VideoFrame / WebglBackEnd no VideoFrame support

### Description

VideoFrame does not exist prior to safari ios 16.4

Making any WebGLBackEnd app using  fail when using a videotexture

### Reproduction steps

open a video texture on a browser that has no VideoFrame constructor on a WebGLBackEnd

### Code

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### Live example

.

### Screenshots

_No response_

### Version

last

### Device

Mobile

### Browser

Safari

### OS

iOS