Regression from #71248:

I believe this pull may have caused errors on WebGL since it moves the `GLES_OVER_GL` guard. WebGL does not support texture swizzling per: https://registry.khronos.org/webgl/specs/latest/2.0/#5.19
so this is causing the following trace in Chrome:
```
WebGL: INVALID_ENUM: texParameter: invalid parameter name
```
and it quickly fills up the 256 log limit for the same message in WebGL.

This doesn't appear to be breaking anything asides from causing the numerous log messages.

_Originally posted by @jnlopar in https://github.com/godotengine/godot/issues/71248#issuecomment-1384768973_

CC @rsjtdrjgfuzkfg @clayjohn
return false;
}
RID TextureStorage::canvas_texture_allocate() {
	return canvas_texture_owner.allocate_rid();
}
void TextureStorage::canvas_texture_initialize(RID p_rid) {
	canvas_texture_owner.initialize_rid(p_rid);
}
void TextureStorage::canvas_texture_free(RID p_rid) {
	canvas_texture_owner.free(p_rid);
}
void TextureStorage::canvas_texture_set_channel(RID p_canvas_texture, RS::CanvasTextureChannel p_channel, RID p_texture) {
	CanvasTexture *ct = canvas_texture_owner.get_or_null(p_canvas_texture);
	ERR_FAIL_NULL(ct);
	switch (p_channel) {
		case RS::CANVAS_TEXTURE_CHANNEL_DIFFUSE: {
			ct->diffuse = p_texture;
		} break;
		case RS::CANVAS_TEXTURE_CHANNEL_NORMAL: {
			ct->normal_map = p_texture;
		} break;
		case RS::CANVAS_TEXTURE_CHANNEL_SPECULAR: {
			ct->specular = p_texture;
		} break;
	}
}
void TextureStorage::canvas_texture_set_shading_parameters(RID p_canvas_texture, const Color &p_specular_color, float p_shininess) {