feat(webapp,run-engine): mollifier drainer replay + stale sweep + cancelled-run engine API #6620

Job	Run time
Detect changes	5s
e2e-webapp / 🧪 E2E Tests: Webapp	3m 57s
webapp / 🧪 Unit Tests: Webapp (1, 8)	1m 46s
webapp / 🧪 Unit Tests: Webapp (3, 8)	1m 34s
internal / 🧪 Unit Tests: Internal (3, 8)	56s
webapp / 🧪 Unit Tests: Webapp (6, 8)	1m 31s
internal / 🧪 Unit Tests: Internal (2, 8)	56s
webapp / 🧪 Unit Tests: Webapp (5, 8)	1m 48s
webapp / 🧪 Unit Tests: Webapp (7, 8)	1m 46s
internal / 🧪 Unit Tests: Internal (1, 8)	1m 8s
webapp / 🧪 Unit Tests: Webapp (2, 8)	1m 35s
webapp / 🧪 Unit Tests: Webapp (4, 8)	1m 38s
internal / 🧪 Unit Tests: Internal (8, 8)	1m 6s
webapp / 🧪 Unit Tests: Webapp (8, 8)	1m 46s
internal / 🧪 Unit Tests: Internal (5, 8)	1m 8s
internal / 🧪 Unit Tests: Internal (6, 8)	57s
internal / 🧪 Unit Tests: Internal (7, 8)	1m 10s
internal / 🧪 Unit Tests: Internal (4, 8)	53s
packages	0s
e2e	0s
sdk-compat	0s
typecheck / typecheck	7m 22s
internal / 📊 Merge Reports	23s
webapp / 📊 Merge Reports	27s
All PR Checks	3s
	33m 55s

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