Add unit tests for `uploadPayload` #8036

Job	Run time
Split workflow (macos-latest, default)	1m 22s
Split workflow (macos-latest, nightly-latest)	2m 25s
Split workflow (macos-latest, linked)	1m 19s
Split workflow (ubuntu-latest, linked)	1m 29s
Split workflow (ubuntu-latest, default)	1m 56s
Split workflow (ubuntu-latest, nightly-latest)	1m 32s
	10m 3s

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