Stabilize `find_debug_info` #5848

Job	Run time
regression (macos-12)	47m 3s
regression (ubuntu-20.04)	19m 6s
regression (ubuntu-22.04)	21m 29s
benchcomp-tests	12m 51s
bookrunner	17m 42s
perf	28m 25s
write-json-symtab-regression	12m 9s
	2h 38m 45s

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