[PR #8933/8f3b1f44 backport][3.11] Small cleanups to the websocket frame sender #5317

Job	Run time
Linter	48s
Generate llhttp sources	6s
Test (3.9, ubuntu, false)	5m 30s
Test (3.9, macos, false)	4m 15s
Test (3.9, windows, false)	5m 56s
Test (3.9, Y, ubuntu, false)	5m 17s
Test (3.10, ubuntu, false)	6m 4s
Test (3.10, macos, false)	4m 33s
Test (3.10, windows, false)	6m 20s
Test (3.10, Y, ubuntu, false)	5m 20s
Test (3.11, ubuntu, false)	5m 52s
Test (3.11, macos, false)	4m 29s
Test (3.11, windows, false)	6m 46s
Test (3.11, Y, ubuntu, false)	4m 55s
Test (3.12, ubuntu, false)	5m 28s
Test (3.12, macos, false)	4m 28s
Test (3.12, windows, false)	8m 23s
Test (3.12, Y, ubuntu, false)	5m 49s
Test (pypy-3.9, Y, ubuntu, false)	11m 23s
Test (ubuntu, 3.13, true, Y)	1m 21s
check	1s
Pre-Deploy	0s
Build wheels on ${{ matrix.os }} ${{ matrix.qemu }}	0s
Tarball	0s
Deploy	0s
	1h 43m 4s

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