### Godot version

4.0 beta 17

### System information

Windows 10

### Issue description

MultiMeshInstance2D is not displaying anything in renderer `gl_compatibility` (GLES3)
Works as expected with `forward_plus` 

### Steps to reproduce

Create a project with renderer `gl_compatibility`
Add a MultiMeshInstance2D


### Minimal reproduction project


[Multimeshinstance2d.zip](https://github.com/godotengine/godot/files/10578720/Multimeshinstance2d.zip)

if (clight->shadow.enabled) {
				state.light_uniforms[index].flags |= LIGHT_FLAGS_HAS_SHADOW;
			}
			if (clight->texture.is_valid()) {
				Rect2 atlas_rect = GLES3::TextureStorage::get_singleton()->texture_atlas_get_texture_rect(clight->texture);
				state.light_uniforms[index].atlas_rect[0] = atlas_rect.position.x;
				state.light_uniforms[index].atlas_rect[1] = atlas_rect.position.y;
				state.light_uniforms[index].atlas_rect[2] = atlas_rect.size.width;
				state.light_uniforms[index].atlas_rect[3] = atlas_rect.size.height;
			} else {
				state.light_uniforms[index].atlas_rect[0] = 0;
				state.light_uniforms[index].atlas_rect[1] = 0;
				state.light_uniforms[index].atlas_rect[2] = 0;
				state.light_uniforms[index].atlas_rect[3] = 0;
			}
			l->render_index_cache = index;
			index++;
			l = l->next_ptr;
		}
		light_count = index;
	}
	if (light_count > 0) {
		glBindBufferBase(GL_UNIFORM_BUFFER, LIGHT_UNIFORM_LOCATION, state.canvas_instance_data_buffers[state.current_data_buffer_index].light_ubo);
#ifdef WEB_ENABLED
		glBufferSubData(GL_UNIFORM_BUFFER, 0, sizeof(LightUniform) * light_count, state.light_uniforms);
#else
		
		void *ubo = glMapBufferRange(GL_UNIFORM_BUFFER, 0, sizeof(LightUniform) * light_count, GL_MAP_WRITE_BIT | GL_MAP_UNSYNCHRONIZED_BIT);
		memcpy(ubo, state.light_uniforms, sizeof(LightUniform) * light_count);
		glUnmapBuffer(GL_UNIFORM_BUFFER);