repl: fix getters triggering side effects during completion #1622

Job	Run time
Build slim tarball	1m 20s
x86_64-darwin: with shared libraries	3h 18m 4s
x86_64-linux: with shared libraries	38m 20s
aarch64-darwin: with shared libraries	38m 31s
aarch64-linux: with shared libraries	34m 6s
	5h 10m 21s

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