Fix flakey middleware recursion tests by using server URL (#12571) #2654

Job	Run time
Generate llhttp sources	9s
Linter	55s
Pre-Setup global build settings	3s
Cython coverage (windows)	1m 53s
Cython coverage (ubuntu)	1m 41s
Autobahn testsuite (3.14, ubuntu)	12m 1s
Benchmark	0s
Test (3.10, windows, false)	3m 56s
Test (3.11, macos, false)	7m 22s
Test (3.10, Y, ubuntu, false)	5m 0s
Test (3.10, macos, false)	7m 35s
Test (3.10, ubuntu, false)	3m 6s
Test (3.11, ubuntu, false)	2m 55s
Test (3.12, Y, ubuntu, false)	5m 11s
Test (3.12, ubuntu, false)	3m 8s
Test (3.13, ubuntu, false)	2m 56s
Test (3.11, windows, false)	5m 27s
Test (3.14, ubuntu, false)	3m 11s
Test (3.13, macos, false)	7m 9s
Test (3.13, windows, false)	4m 7s
Test (3.14, macos, false)	4m 50s
Test (3.12, windows, false)	4m 2s
Test (3.12, macos, false)	7m 11s
Test (3.14, windows, false)	4m 51s
Test (3.13, Y, ubuntu, false)	4m 44s
Test (3.11, Y, ubuntu, false)	5m 3s
Test (pypy-3.11, Y, ubuntu, false)	7m 20s
Test (ubuntu, 3.14t, false)	3m 30s
Test (3.14, Y, ubuntu, false)	4m 30s
check	5s
Pre-Deploy	-1s
Tarball	0s
Build wheels on ${{ matrix.os }} ${{ matrix.qemu }} ${{ matrix.musl }}	0s
Deploy	0s
	2h 3m 50s

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