Add PPC_IGNORE_TEST_TIME_LIMIT environment variable to disable test time limits #2633

Job	Run time
python-lint	6s
clang-format	12s
ubuntu-clang-build (ubuntu-24.04-arm)	2m 11s
ubuntu-gcc-build (ubuntu-24.04)	1m 0s
ubuntu-clang-build (ubuntu-24.04)	3m 39s
ubuntu-gcc-build (ubuntu-24.04-arm)	3m 24s
macos-clang-build	1m 52s
windows-msvc-build	2m 43s
windows-clang-build	4m 34s
ubuntu-clang-test (ubuntu-24.04)	4m 37s
ubuntu-clang-sanitizer-build (ubuntu-24.04)	2m 10s
ubuntu-clang-test (ubuntu-24.04-arm)	6m 30s
macos-clang-test	3m 5s
ubuntu-gcc-test (ubuntu-24.04-arm)	5m 39s
ubuntu-gcc-test (ubuntu-24.04)	4m 30s
windows-msvc-test	2m 24s
windows-clang-test	1m 33s
ubuntu-clang-sanitizer-test (ubuntu-24.04)	2m 13s
ubuntu-clang-test-extended (ubuntu-24.04-arm)	4m 6s
ubuntu-clang-test-extended (ubuntu-24.04)	6m 13s
macos-clang-test-extended	2m 3s
windows-msvc-test-extended	1m 16s
ubuntu-gcc-test-extended (ubuntu-24.04-arm)	3m 30s
ubuntu-gcc-test-extended (ubuntu-24.04)	2m 32s
windows-clang-test-extended	1m 25s
ubuntu-clang-sanitizer-test-extended (ubuntu-24.04)	1m 42s
ubuntu-gcc-build-codecov	3m 44s
ubuntu-gcc-build-perf-stats	1m 2s
	1h 19m 55s

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