### Godot version

master CI builds

### System information

Linux / Editor with doubles and GCC sanitizers

### Issue description

The `Linux / Editor with doubles and GCC sanitizers` build can fail with a `attempting free on address which was not malloc()-ed` crash in the `Open and close editor (Vulkan)` step.

https://github.com/godotengine/godot/actions/runs/5366302204/jobs/9735786296#step:15:138
https://github.com/godotengine/godot/actions/runs/5389199469/jobs/9783070708?pr=78740#step:15:138

The failure doesn't seem related to either PR (in fact one of them is just a docs change). I have only seen this issue these two times, still probably worth looking into.

### Steps to reproduce

Open and close https://github.com/godotengine/regression-test-project/archive/4.0.zip using the Vulkan renderer.

### Minimal reproduction project

https://github.com/godotengine/regression-test-project/archive/4.0.zip
allocInfo.requiredFlags = 0;
	allocInfo.preferredFlags = 0;
	allocInfo.memoryTypeBits = 0;
	allocInfo.pool = nullptr;
	allocInfo.pUserData = nullptr;
	if (p_size <= SMALL_ALLOCATION_MAX_SIZE) {
		uint32_t mem_type_index = 0;
		vmaFindMemoryTypeIndexForBufferInfo(allocator, &bufferInfo, &allocInfo, &mem_type_index);
		allocInfo.pool = _find_or_create_small_allocs_pool(mem_type_index);
	}
	VkResult err = vmaCreateBuffer(allocator, &bufferInfo, &allocInfo, &p_buffer->buffer, &p_buffer->allocation, nullptr);
	ERR_FAIL_COND_V_MSG(err, ERR_CANT_CREATE, "Can't create buffer of size: " + itos(p_size) + ", error " + itos(err) + ".");
	p_buffer->size = p_size;
	p_buffer->buffer_info.buffer = p_buffer->buffer;
	p_buffer->buffer_info.offset = 0;
	p_buffer->buffer_info.range = p_size;
	p_buffer->usage = p_usage;
	buffer_memory += p_size;
	return OK;
}
Error RenderingDeviceVulkan::_buffer_free(Buffer *p_buffer) {
	ERR_FAIL_COND_V(p_buffer->size == 0, ERR_INVALID_PARAMETER);
	buffer_memory -= p_buffer->size;
	vmaDestroyBuffer(allocator, p_buffer->buffer, p_buffer->allocation);
	p_buffer->buffer = VK_NULL_HANDLE;
	p_buffer->allocation = nullptr;
	p_buffer->size = 0;
	return OK;
}
Error RenderingDeviceVulkan::_insert_staging_block() {