### 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
}
		}
	}
	if (oc->line_point_count != lines.size() && oc->vertex_array != 0) {
		glDeleteVertexArrays(1, &oc->vertex_array);
		GLES3::Utilities::get_singleton()->buffer_free_data(oc->vertex_buffer);
		GLES3::Utilities::get_singleton()->buffer_free_data(oc->index_buffer);
		oc->vertex_array = 0;
		oc->vertex_buffer = 0;
		oc->index_buffer = 0;
	}
	if (lines.size()) {
		Vector<uint8_t> geometry;
		Vector<uint8_t> indices;
		int lc = lines.size();
		geometry.resize(lc * 6 * sizeof(float));
		indices.resize(lc * 3 * sizeof(uint16_t));
		{
			uint8_t *vw = geometry.ptrw();
			float *vwptr = reinterpret_cast<float *>(vw);
			uint8_t *iw = indices.ptrw();
			uint16_t *iwptr = (uint16_t *)iw;
			const Vector2 *lr = lines.ptr();
			const int POLY_HEIGHT = 16384;
			for (int i = 0; i < lc / 2; i++) {
				vwptr[i * 12 + 0] = lr[i * 2 + 0].x;
				vwptr[i * 12 + 1] = lr[i * 2 + 0].y;
				vwptr[i * 12 + 2] = POLY_HEIGHT;
				vwptr[i * 12 + 3] = lr[i * 2 + 1].x;
				vwptr[i * 12 + 4] = lr[i * 2 + 1].y;