Make MESSAGE_TYPES_WITH_CONTENT a frozenset for the WebSocketReader #4683

Job	Run time
Linter	1m 2s
Generate llhttp sources	6s
Test (3.8, ubuntu, false)	5m 30s
Test (3.8, windows, false)	5m 30s
Test (3.8, Y, ubuntu, false)	7m 20s
Test (3.9, ubuntu, false)	5m 29s
Test (3.9, macos, false)	4m 16s
Test (3.9, windows, false)	6m 15s
Test (3.9, Y, ubuntu, false)	6m 30s
Test (3.10, ubuntu, false)	6m 37s
Test (3.10, macos, false)	4m 11s
Test (3.10, windows, false)	5m 30s
Test (3.10, Y, ubuntu, false)	6m 51s
Test (3.11, ubuntu, false)	5m 53s
Test (3.11, macos, false)	5m 8s
Test (3.11, windows, false)	6m 25s
Test (3.11, Y, ubuntu, false)	6m 17s
Test (3.12, ubuntu, false)	6m 4s
Test (3.12, macos, false)	4m 5s
Test (3.12, windows, false)	6m 18s
Test (3.12, Y, ubuntu, false)	7m 25s
Test (pypy-3.9, Y, ubuntu, false)	12m 48s
Test (ubuntu, 3.13, true, Y)	1m 26s
check	4s
Pre-Deploy	0s
Tarball	0s
Build wheels on ${{ matrix.os }} ${{ matrix.qemu }}	0s
Deploy	0s
	2h 7m 0s

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