Test

Make total_steal_time() monotonic. #1

Job	Run time
Test with DPDK enabled / test	22m 26s
Test with C++20 modules enabled / test	11m 13s
Test (clang++, C++20, debug) / test	16m 7s
Test (clang++, C++20, dev) / test	16m 19s
Test (clang++, C++20, release) / test	14m 57s
Test (clang++, C++23, debug) / test	16m 7s
Test (clang++, C++23, dev) / test	17m 2s
Test (clang++, C++23, release) / test	15m 26s
Test (g++, C++20, debug) / test	19m 6s
Test (g++, C++20, dev) / test	12m 40s
Test (g++, C++20, release) / test	17m 6s
Test (g++, C++23, debug) / test	19m 9s
Test (g++, C++23, dev) / test	13m 12s
Test (g++, C++23, release) / test	16m 58s
	3h 47m 48s

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