Add codesharing for `st0` `func_801BC5C0` + `func_801BD8F0` #9300

Job	Run time
build-and-test (us)	2m 39s
build-and-test (hd)	1m 38s
build-and-test (pspeu)	1m 33s
generate-duplicates-report	0s
generate-duplicates-report-psp	0s
generate-progress-report	0s
	5m 50s

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