### Godot version

4.1.1 stable

### System information

Windows 10

### Issue description

this is the default size loaded on startup 1024 which seems fine but it actually have loaded the default [2048] and ignored the size in project settings
![image](https://github.com/godotengine/godot/assets/53877170/c8c71de7-468a-487f-8e6c-dba1ce0f8fa5)

changing it now to any size will break it 
[2048]
![image](https://github.com/godotengine/godot/assets/53877170/3082ff09-b7d7-41f7-8fbb-813074a54135)

[512]
![image](https://github.com/godotengine/godot/assets/53877170/5ea4620f-52b5-4d0e-a5f5-747e777cd59d)


### Steps to reproduce

change 2d shadow atlas size in project settings while using compatibility renderer. 

### Minimal reproduction project

_
if (state.canvas_instance_batches.size() == 0) {
		state.canvas_instance_batches.push_back(Batch());
		return;
	}
	if (r_batch_broken || state.canvas_instance_batches[state.current_batch_index].instance_count == 0) {
		return;
	}
	r_batch_broken = true;
	
	Batch new_batch = state.canvas_instance_batches[state.current_batch_index];
	new_batch.instance_count = 0;
	new_batch.start = state.canvas_instance_batches[state.current_batch_index].start + state.canvas_instance_batches[state.current_batch_index].instance_count;
	new_batch.instance_buffer_index = state.current_instance_buffer_index;
	state.current_batch_index++;
	state.canvas_instance_batches.push_back(new_batch);
}
void RasterizerCanvasGLES3::_enable_attributes(uint32_t p_start, bool p_primitive, uint32_t p_rate) {
	uint32_t split = p_primitive ? 11 : 12;
	for (uint32_t i = 6; i < split; i++) {
		glEnableVertexAttribArray(i);
		glVertexAttribPointer(i, 4, GL_FLOAT, GL_FALSE, sizeof(InstanceData), CAST_INT_TO_UCHAR_PTR(p_start + (i - 6) * 4 * sizeof(float)));
		glVertexAttribDivisor(i, p_rate);
	}
	for (uint32_t i = split; i <= 13; i++) {
		glEnableVertexAttribArray(i);
		glVertexAttribIPointer(i, 4, GL_UNSIGNED_INT, sizeof(InstanceData), CAST_INT_TO_UCHAR_PTR(p_start + (i - 6) * 4 * sizeof(float)));
		glVertexAttribDivisor(i, p_rate);
	}
}
RID RasterizerCanvasGLES3::light_create() {