### 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
ct = t->canvas_texture;
		if (t->render_target) {
			t->render_target->used_in_frame = true;
		}
	} else {
		ct = texture_storage->get_canvas_texture(p_texture);
	}
	if (!ct) {
		
		_bind_canvas_texture(default_canvas_texture, p_base_filter, p_base_repeat);
		return;
	}
	RS::CanvasItemTextureFilter filter = ct->texture_filter != RS::CANVAS_ITEM_TEXTURE_FILTER_DEFAULT ? ct->texture_filter : p_base_filter;
	ERR_FAIL_COND(filter == RS::CANVAS_ITEM_TEXTURE_FILTER_DEFAULT);
	RS::CanvasItemTextureRepeat repeat = ct->texture_repeat != RS::CANVAS_ITEM_TEXTURE_REPEAT_DEFAULT ? ct->texture_repeat : p_base_repeat;
	ERR_FAIL_COND(repeat == RS::CANVAS_ITEM_TEXTURE_REPEAT_DEFAULT);
	GLES3::Texture *texture = texture_storage->get_texture(ct->diffuse);
	if (!texture) {
		GLES3::Texture *tex = texture_storage->get_texture(texture_storage->texture_gl_get_default(GLES3::DEFAULT_GL_TEXTURE_WHITE));
		glActiveTexture(GL_TEXTURE0);
		glBindTexture(GL_TEXTURE_2D, tex->tex_id);
	} else {
		glActiveTexture(GL_TEXTURE0);
		glBindTexture(GL_TEXTURE_2D, texture->tex_id);
		texture->gl_set_filter(filter);
		texture->gl_set_repeat(repeat);
		if (texture->render_target) {
			texture->render_target->used_in_frame = true;
		}
	}