fix(webapp,run-engine): stop batchTriggerAndWait hanging when item streaming never completes #9005

Job	Run time
Detect changes	7s
code-quality / code-quality	2m 46s
runops-guard / runops-guard	2m 19s
internal / 🧪 Unit Tests: Internal	8m 49s
typecheck / typecheck	3m 56s
e2e-webapp / 🧪 E2E Tests: Webapp	3m 46s
webapp / 🧪 Unit Tests: Webapp (4, 12)	7m 12s
webapp / 🧪 Unit Tests: Webapp (3, 12)	7m 38s
webapp / 🧪 Unit Tests: Webapp (2, 12)	7m 14s
webapp / 🧪 Unit Tests: Webapp (11, 12)	7m 40s
webapp / 🧪 Unit Tests: Webapp (12, 12)	7m 18s
webapp / 🧪 Unit Tests: Webapp (6, 12)	6m 51s
webapp / 🧪 Unit Tests: Webapp (9, 12)	7m 7s
webapp / 🧪 Unit Tests: Webapp (8, 12)	7m 18s
webapp / 🧪 Unit Tests: Webapp (5, 12)	7m 25s
webapp / 🧪 Unit Tests: Webapp (10, 12)	6m 58s
webapp / 🧪 Unit Tests: Webapp (7, 12)	7m 25s
e2e	0s
webapp / 🧪 Unit Tests: Webapp (1, 12)	7m 29s
packages	0s
sdk-compat	0s
webapp / 📊 Merge Reports	18s
All PR Checks	5s
	1h 49m 41s

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