Some examples hang after #4202

[a1phyr]

Description
Running skybox, shadow or boids example hangs.
I didn't test all other examples, but at least hello-triangle and hello-compute work.

Repro steps
Run examples

Extra materials
This starts happenning in #4202

Platform
OS: Debian stable

wgpu-info:

Adapter 0:
	   Backend: Vulkan
	      Name: "Intel(R) UHD Graphics 630 (CML GT2)"
	  VendorID: 32902
	  DeviceID: 39880
	      Type: IntegratedGpu
	    Driver: "Intel open-source Mesa driver"
	DriverInfo: "Mesa 22.3.6"
	 Compliant: true

Adapter 1:
	   Backend: Vulkan
	      Name: "llvmpipe (LLVM 15.0.6, 256 bits)"
	  VendorID: 65541
	  DeviceID: 0
	      Type: Cpu
	    Driver: "llvmpipe"
	DriverInfo: "Mesa 22.3.6 (LLVM 15.0.6)"
	 Compliant: true

Adapter 2:
	   Backend: Gl
	      Name: "Mesa Intel(R) UHD Graphics 630 (CML GT2)"
	  VendorID: 32902
	  DeviceID: 0
	      Type: IntegratedGpu
	    Driver: ""
	DriverInfo: ""
	 Compliant: false

Hangs happen with all of them

[TornaxO7]

Oh boi.... I'll dig into this later. Thank you for finding this.

[TornaxO7]

Ok, I think I found the issue. I let the window drop in the new()function of the gpu-test-struct. Adding it back again did it for me. I'll quickly create a PR.