fix(api): validation casing for mixed tip use between single and eigh… #33272

Job	Run time
opentrons app frontend unit tests	16m 17s
Determine build variant and type	1s
opentrons app backend unit tests on windows-2022	10m 11s
opentrons app backend unit tests on ubuntu-22.04	4m 5s
opentrons app backend unit tests on macos-11	10m 13s
Build release desktop app on windows-2022	15m 38s
Build release desktop app on ubuntu-22.04	6m 30s
Build release odd app on ubuntu-22.04	3m 48s
Build release desktop app on macos-11	44m 12s
Deploy built app artifacts to S3	3m 52s
	1h 54m 47s

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