test: increase timeout of wait for socket to be closed

[ywave620]

For a passive closing socket, wait 100 ms for it to be closed.
Fix #47200

[ywave620]

100ms is enough for the stress test to paas in my mac.

roger@MacBook-Pro node-contribute % python3 tools/test.py parallel/test-http-remove-connection-header-persists-connection -j10 --repeat 1000
[00:47|% 100|+ 1000|-   0]: Done                                              

All tests passed.
roger@MacBook-Pro node-contribute % uname -a
Darwin MacBook-Pro.local 21.6.0 Darwin Kernel Version 21.6.0: Wed Aug 10 14:25:27 PDT 2022; root:xnu-8020.141.5~2/RELEASE_X86_64 x86_64
roger@MacBook-Pro node-contribute % 

[debadree25]

I think 50ms too would not be bad, just did some preliminary check it passed the stress test at 50 too, just want to optimise for the lowest number for which this wouldnt be flaky

[lpinca]

I think this is no longer needed. The stress test passes on my mac.

$ ./tools/test.py -J --repeat=1000 test/parallel/test-http-remove-connection-header-persists-connection.js  
[00:12|% 100|+ 1000|-   0]: Done                                              

All tests passed.