repl: fix dedup comparing normalized line against raw history #5826

Job	Run time
Build slim tarball	2m 0s
aarch64-linux: with shared libraries	21m 1s
aarch64-darwin: with shared libraries	25m 5s
x86_64-linux: with shared libraries	26m 11s
x86_64-darwin: with shared libraries	42m 11s
	1h 56m 28s

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