fix partitionkey value fetching #6996

Job	Run time
Compile TypeScript	1m 47s
Check Format	1m 19s
Build	5m 51s
Log Code Metrics	0s
Lint	1m 36s
Run Playwright Tests (Shard 1 of 8)	8m 50s
Unit Tests	2m 54s
Run Playwright Tests (Shard 2 of 8)	7m 29s
Run Playwright Tests (Shard 3 of 8)	6m 1s
Run Playwright Tests (Shard 4 of 8)	9m 10s
Run Playwright Tests (Shard 5 of 8)	5m 56s
Run Playwright Tests (Shard 6 of 8)	7m 17s
Run Playwright Tests (Shard 7 of 8)	9m 48s
Run Playwright Tests (Shard 8 of 8)	5m 14s
Publish Nuget MPAC	0s
Publish Nuget	0s
Merge Playwright Reports	1m 16s
	1h 14m 28s

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