Improve Windows CI logic to cleanup leftover processes (#93914)
This is really hard to debug, the faulty runner already disappeared by the time I tried to login. However, I figure out a way to get all the processes that could potentially hold the workspace by running:
```
choco install sysinternals -y
handle64.exe C:\actions-runner\_work\pytorch\pytorch\test\test-reports\
```
This gives me a better list of processes to kill.
```
PS C:\Windows\system32> handle64.exe C:\actions-runner\_work\pytorch\pytorch\test\test-reports\
Nthandle v5.0 - Handle viewer
Copyright (C) 1997-2022 Mark Russinovich
Sysinternals - www.sysinternals.com
python.exe pid: 1672 type: File 574: C:\actions-runner\_work\pytorch\pytorch\test\test-reports\test_cpp_extensions_jit_r04_oc2b.log
python.exe pid: 4604 type: File 6C8: C:\actions-runner\_work\pytorch\pytorch\test\test-reports\test_cpp_extensions_jit_r04_oc2b.log
python.exe pid: 4604 type: File 6CC: C:\actions-runner\_work\pytorch\pytorch\test\test-reports\test_cpp_extensions_jit_r04_oc2b.log
ninja.exe pid: 4764 type: File 468: C:\actions-runner\_work\pytorch\pytorch\test\test-reports\test_cpp_extensions_jit_r04_oc2b.log
ninja.exe pid: 4764 type: File 5F4: C:\actions-runner\_work\pytorch\pytorch\test\test-reports\test_cpp_extensions_jit_r04_oc2b.log
cl.exe pid: 5336 type: File 468: C:\actions-runner\_work\pytorch\pytorch\test\test-reports\test_cpp_extensions_jit_r04_oc2b.log
cl.exe pid: 5336 type: File 5F4: C:\actions-runner\_work\pytorch\pytorch\test\test-reports\test_cpp_extensions_jit_r04_oc2b.log
nvcc.exe pid: 1680 type: File 468: C:\actions-runner\_work\pytorch\pytorch\test\test-reports\test_cpp_extensions_jit_r04_oc2b.log
nvcc.exe pid: 1680 type: File 5F4: C:\actions-runner\_work\pytorch\pytorch\test\test-reports\test_cpp_extensions_jit_r04_oc2b.log
cmd.exe pid: 976 type: File 468: C:\actions-runner\_work\pytorch\pytorch\test\test-reports\test_cpp_extensions_jit_r04_oc2b.log
cmd.exe pid: 976 type: File 5F4: C:\actions-runner\_work\pytorch\pytorch\test\test-reports\test_cpp_extensions_jit_r04_oc2b.log
```
Crossing my fingers to have this working
Pull Request resolved: https://github.com/pytorch/pytorch/pull/93914
Approved by: https://github.com/clee2000
