Add unit tests for `uploadPayload` #10567

Job	Run time
check-codeql-versions	32s
analyze-other (python)	59s
analyze-other (actions)	53s
analyze-javascript (ubuntu-24.04)	3m 59s
analyze-javascript (ubuntu-22.04, linked)	4m 17s
analyze-javascript (windows-2022)	6m 30s
analyze-javascript (windows-2025)	6m 25s
analyze-javascript (ubuntu-24.04, linked)	4m 23s
analyze-javascript (ubuntu-22.04)	4m 15s
analyze-javascript (macos-13)	10m 45s
analyze-javascript (windows-2022, linked)	6m 49s
analyze-javascript (macos-14)	7m 19s
analyze-javascript (windows-2025, linked)	6m 58s
analyze-javascript (macos-13, linked)	5m 58s
analyze-javascript (macos-14, linked)	7m 16s
analyze-javascript (macos-15)	7m 31s
analyze-javascript (macos-15, linked)	9m 21s
	1h 34m 10s

Provide feedback