More frequent online weight sampling when testing #2406

Job	Run time
Linux [UBSAN] [lmdb \| clang]	36m 48s
Linux [ASAN] [lmdb \| clang]	37m 52s
Linux [ASAN_INT] [lmdb \| clang] (Errors Ignored)	41m 9s
Linux [TSAN] [lmdb \| clang]	42m 24s
macOS [UBSAN] [lmdb \| clang]	39m 1s
Linux [LEAK] [lmdb \| clang]	40m 17s
macOS [ASAN] [lmdb \| clang]	28m 12s
Linux [UBSAN] [rocksdb \| clang]	48m 51s
macOS [TSAN] [lmdb \| clang]	30m 51s
Linux [ASAN] [rocksdb \| clang]	51m 30s
macOS [UBSAN] [rocksdb \| clang]	39m 35s
Linux [ASAN_INT] [rocksdb \| clang] (Errors Ignored)	53m 26s
macOS [ASAN] [rocksdb \| clang]	36m 33s
Linux [LEAK] [rocksdb \| clang]	53m 28s
macOS [TSAN] [rocksdb \| clang]	48m 13s
	10h 28m 10s

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