feat: prefer event properties to person properties when describing sessions #105935

Job	Run time
Determine need to run frontend checks	10s
Code quality checks	10m 53s
Jest test (FOSS - 1)	1m 31s
Jest test (FOSS - 2)	1m 17s
Jest test (FOSS - 3)	1m 35s
Jest test (EE - 1)	1m 43s
Jest test (EE - 2)	1m 21s
Jest test (EE - 3)	1m 33s
	20m 3s

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