Revert account store iterator in `bootstrap_server` (#4688) #2144

Job	Run time
Linux [UBSAN] [lmdb \| clang]	38m 55s
macOS [UBSAN] [lmdb \| clang]	33m 49s
Linux [ASAN] [lmdb \| clang]	38m 27s
macOS [ASAN] [lmdb \| clang]	31m 12s
Linux [ASAN_INT] [lmdb \| clang] (Errors Ignored)	39m 57s
macOS [TSAN] [lmdb \| clang]	32m 34s
Linux [TSAN] [lmdb \| clang]	39m 56s
macOS [UBSAN] [rocksdb \| clang]	45m 12s
Linux [LEAK] [lmdb \| clang] (Errors Ignored)	42m 36s
macOS [ASAN] [rocksdb \| clang]	42m 55s
Linux [UBSAN] [rocksdb \| clang]	52m 46s
macOS [TSAN] [rocksdb \| clang]	53m 45s
Linux [ASAN] [rocksdb \| clang]	54m 13s
Linux [ASAN_INT] [rocksdb \| clang] (Errors Ignored)	56m 42s
Linux [LEAK] [rocksdb \| clang] (Errors Ignored)	55m 40s
	10h 58m 39s

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