fix(webapp): treat Phase 2 batch-stream retries as idempotent (TRI-99… #3142

Job	Run time
typecheck / typecheck	7m 43s
units / packages / 🧪 Unit Tests: Packages (1, 1)	10m 29s
units / internal / 🧪 Unit Tests: Internal (5, 8)	6m 9s
units / e2e-webapp / 🧪 E2E Tests: Webapp	3m 32s
units / internal / 🧪 Unit Tests: Internal (4, 8)	6m 36s
units / internal / 🧪 Unit Tests: Internal (1, 8)	6m 56s
units / internal / 🧪 Unit Tests: Internal (7, 8)	6m 51s
units / internal / 🧪 Unit Tests: Internal (6, 8)	6m 27s
units / webapp / 🧪 Unit Tests: Webapp (7, 8)	8m 30s
units / internal / 🧪 Unit Tests: Internal (3, 8)	8m 47s
units / webapp / 🧪 Unit Tests: Webapp (6, 8)	7m 52s
units / internal / 🧪 Unit Tests: Internal (8, 8)	2m 42s
units / webapp / 🧪 Unit Tests: Webapp (5, 8)	5m 20s
units / webapp / 🧪 Unit Tests: Webapp (4, 8)	8m 7s
units / webapp / 🧪 Unit Tests: Webapp (2, 8)	4m 32s
units / webapp / 🧪 Unit Tests: Webapp (1, 8)	6m 22s
units / internal / 🧪 Unit Tests: Internal (2, 8)	13m 17s
units / webapp / 🧪 Unit Tests: Webapp (8, 8)	2m 49s
units / webapp / 🧪 Unit Tests: Webapp (3, 8)	4m 7s
publish-worker / build (docker-provider)	2m 5s
publish-worker / build (coordinator)	1m 38s
publish-worker / build (kubernetes-provider)	56s
publish-worker-v4 / build (supervisor)	3m 50s
publish-webapp / publish	7m 59s
units / webapp / 📊 Merge Reports	58s
units / packages / 📊 Merge Reports	28s
units / internal / 📊 Merge Reports	26s
	2h 25m 28s

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