Temporary work around nullptr seqno_to_time_mapping in FlushJob (#13269) #3836

Job	Run time
build-linux-cmake-mingw	12m 30s
build-linux-cmake-with-folly-lite-no-test	7m 59s
build-linux-cmake-with-folly-coroutines	31m 38s
build-linux-cmake-with-benchmark	19m 55s
build-linux-cmake-with-folly	28m 25s
build-linux-encrypted_env-no_compression	16m 48s
build-linux-make-with-folly	28m 32s
build-linux-make-with-folly-lite-no-test	9m 24s
build-linux-release	14m 12s
check-format-and-targets	25s
build-examples	11m 0s
build-fuzzers	8m 34s
build-linux	17m 45s
build-linux-clang10-asan	17m 12s
build-linux-clang10-clang-analyze	17m 22s
build-linux-clang10-ubsan	17m 16s
build-linux-clang13-mini-tsan	24m 50s
build-linux-clang-13-no_test_run	7m 9s
build-linux-clang-no_test_run	11m 47s
build-linux-gcc-10-cxx20-no_test_run	9m 53s
build-linux-gcc-11-no_test_run	10m 37s
build-linux-gcc-8-no_test_run	8m 49s
build-linux-mini-crashtest	49m 5s
build-linux-release-rtti	12m 30s
build-linux-static_lib-alt_namespace-status_checked	19m 28s
build-linux-unity-and-headers	13m 34s
build-macos	21m 17s
build-linux-arm	14m 5s
build-linux-java	14m 56s
build-linux-java-pmd	12m 3s
build-linux-java-static	11m 54s
build-macos-cmake (true)	51m 4s
build-macos-cmake (false)	43m 27s
build-macos-java	19m 26s
build-macos-java-static	24m 9s
build-macos-java-static-universal	21m 37s
build-windows-vs2019	52m 55s
	11h 53m 32s

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