repl: fix getters triggering side effects during completion #1721

Job	Run time
Build slim tarball	1m 32s
x86_64-linux: with shared libraries	29m 9s
aarch64-darwin: with shared libraries	31m 32s
aarch64-linux: with shared libraries	24m 32s
x86_64-darwin: with shared libraries	34m 33s
	2h 1m 18s

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