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
RenderTarget *rt = render_target_owner.get_or_null(p_render_target);
	ERR_FAIL_COND(!rt);
	rt->position = Point2i(p_x, p_y);
}
Point2i TextureStorage::render_target_get_position(RID p_render_target) const {
	RenderTarget *rt = render_target_owner.get_or_null(p_render_target);
	ERR_FAIL_COND_V(!rt, Point2i());
	return rt->position;
};
void TextureStorage::render_target_set_size(RID p_render_target, int p_width, int p_height, uint32_t p_view_count) {
	RenderTarget *rt = render_target_owner.get_or_null(p_render_target);
	ERR_FAIL_COND(!rt);
	if (p_width == rt->size.x && p_height == rt->size.y && p_view_count == rt->view_count) {
		return;
	}
	if (rt->overridden.color.is_valid()) {
		return;
	}
	_clear_render_target(rt);
	rt->size = Size2i(p_width, p_height);
	rt->view_count = p_view_count;
	_update_render_target(rt);
}
Size2i TextureStorage::render_target_get_size(RID p_render_target) const {