feat: add event loop block notifications and env flag #3997

Job	Run time
e2e / 🧪 CLI v3 tests (ubuntu-latest - npm)	1m 47s
typecheck / typecheck	5m 58s
e2e / 🧪 CLI v3 tests (windows-latest - npm)	3m 34s
e2e / 🧪 CLI v3 tests (windows-latest - pnpm)	3m 54s
units / packages / 🧪 Unit Tests: Packages (1, 1)	8m 0s
units / internal / 🧪 Unit Tests: Internal (5, 8)	3m 40s
units / internal / 🧪 Unit Tests: Internal (6, 8)	4m 18s
units / internal / 🧪 Unit Tests: Internal (4, 8)	5m 0s
units / internal / 🧪 Unit Tests: Internal (1, 8)	5m 51s
units / internal / 🧪 Unit Tests: Internal (2, 8)	4m 41s
units / internal / 🧪 Unit Tests: Internal (3, 8)	5m 37s
units / webapp / 🧪 Unit Tests: Webapp (3, 8)	5m 35s
units / internal / 🧪 Unit Tests: Internal (7, 8)	4m 45s
units / internal / 🧪 Unit Tests: Internal (8, 8)	2m 41s
units / webapp / 🧪 Unit Tests: Webapp (1, 8)	5m 51s
units / webapp / 🧪 Unit Tests: Webapp (2, 8)	4m 1s
units / webapp / 🧪 Unit Tests: Webapp (7, 8)	5m 46s
units / webapp / 🧪 Unit Tests: Webapp (4, 8)	3m 31s
units / webapp / 🧪 Unit Tests: Webapp (5, 8)	7m 30s
units / webapp / 🧪 Unit Tests: Webapp (8, 8)	2m 21s
units / webapp / 🧪 Unit Tests: Webapp (6, 8)	2m 20s
e2e / 🧪 CLI v3 tests (ubuntu-latest - pnpm)	1m 46s
units / internal / 📊 Merge Reports	23s
units / webapp / 📊 Merge Reports	46s
units / packages / 📊 Merge Reports	19s
	1h 39m 55s

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