### Godot version

4.1.1.stable, 4.2.dev (2282fc5de)

### System information

Arch Linux - X11 - GLES3 (Compatibility) - NVIDIA GeForce RTX 3060 Ti (nvidia; 535.104.05) - 13th Gen Intel(R) Core(TM) i5-13400F (16 Threads)

### Issue description

When using Compatibility renderer, adjusting the Alpha component of clear color affects 2D editor content.

This does not happen when using Forward+ or Mobile renderer. Does not affect 3D editor and the running game.


https://github.com/godotengine/godot/assets/372476/e398522e-590a-4832-959f-ea8ba8e71c5d



### Steps to reproduce

1. Create a project using Compatibility renderer.
2. Adjust the clear color's alpha component in Project Settings.

### Minimal reproduction project

N/A
CanvasLight canvas_light;
	return canvas_light_owner.make_rid(canvas_light);
}
void RasterizerCanvasGLES3::light_set_texture(RID p_rid, RID p_texture) {
	GLES3::TextureStorage *texture_storage = GLES3::TextureStorage::get_singleton();
	CanvasLight *cl = canvas_light_owner.get_or_null(p_rid);
	ERR_FAIL_COND(!cl);
	if (cl->texture == p_texture) {
		return;
	}
	ERR_FAIL_COND(p_texture.is_valid() && !texture_storage->owns_texture(p_texture));
	if (cl->texture.is_valid()) {
		texture_storage->texture_remove_from_texture_atlas(cl->texture);
	}
	cl->texture = p_texture;
	if (cl->texture.is_valid()) {
		texture_storage->texture_add_to_texture_atlas(cl->texture);
	}
}
void RasterizerCanvasGLES3::light_set_use_shadow(RID p_rid, bool p_enable) {