Optimize election scheduler activate function #1952

Job	Run time
Linux [UBSAN] [lmdb \| clang]	38m 41s
macOS [UBSAN] [lmdb \| clang]	55m 24s
macOS [ASAN] [lmdb \| clang]	29m 15s
Linux [ASAN] [lmdb \| clang]	37m 43s
macOS [TSAN] [lmdb \| clang]	31m 38s
Linux [ASAN_INT] [lmdb \| clang] (Errors Ignored)	38m 23s
macOS [UBSAN] [rocksdb \| clang]	40m 21s
Linux [TSAN] [lmdb \| clang]	40m 50s
macOS [ASAN] [rocksdb \| clang]	36m 10s
Linux [LEAK] [lmdb \| clang] (Errors Ignored)	38m 34s
macOS [TSAN] [rocksdb \| clang]	51m 38s
Linux [UBSAN] [rocksdb \| clang]	44m 36s
Linux [ASAN] [rocksdb \| clang]	48m 59s
Linux [ASAN_INT] [rocksdb \| clang] (Errors Ignored)	50m 25s
Linux [LEAK] [rocksdb \| clang] (Errors Ignored)	48m 16s
	10h 30m 53s

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