fix(engine) prevent MVCC race in blockRunWithWaitpoint pending check #4751

Job	Run time
sdk-compat / Cloudflare Workers	2m 2s
sdk-compat / Deno Runtime	2m 4s
sdk-compat / Node.js 22.12 (ubuntu-latest)	2m 5s
e2e / 🧪 CLI v3 tests (windows-latest - pnpm)	3m 46s
e2e / 🧪 CLI v3 tests (windows-latest - npm)	3m 24s
sdk-compat / Bun Runtime	1m 52s
sdk-compat / Node.js 20.20 (ubuntu-latest)	1m 53s
e2e / 🧪 CLI v3 tests (ubuntu-latest - pnpm)	1m 49s
units / packages / 🧪 Unit Tests: Packages (1, 1)	8m 7s
e2e / 🧪 CLI v3 tests (ubuntu-latest - npm)	1m 45s
units / internal / 🧪 Unit Tests: Internal (4, 8)	5m 10s
units / internal / 🧪 Unit Tests: Internal (2, 8)	9m 57s
units / webapp / 🧪 Unit Tests: Webapp (1, 8)	5m 59s
units / internal / 🧪 Unit Tests: Internal (6, 8)	4m 44s
units / internal / 🧪 Unit Tests: Internal (7, 8)	5m 44s
units / internal / 🧪 Unit Tests: Internal (5, 8)	4m 0s
units / webapp / 🧪 Unit Tests: Webapp (3, 8)	3m 1s
units / internal / 🧪 Unit Tests: Internal (8, 8)	3m 26s
units / webapp / 🧪 Unit Tests: Webapp (6, 8)	3m 34s
units / internal / 🧪 Unit Tests: Internal (3, 8)	6m 20s
units / internal / 🧪 Unit Tests: Internal (1, 8)	6m 9s
units / webapp / 🧪 Unit Tests: Webapp (5, 8)	7m 48s
units / webapp / 🧪 Unit Tests: Webapp (4, 8)	5m 53s
units / webapp / 🧪 Unit Tests: Webapp (8, 8)	2m 20s
typecheck / typecheck	6m 12s
units / webapp / 🧪 Unit Tests: Webapp (7, 8)	5m 38s
units / webapp / 🧪 Unit Tests: Webapp (2, 8)	3m 58s
units / webapp / 📊 Merge Reports	42s
units / packages / 📊 Merge Reports	24s
units / internal / 📊 Merge Reports	24s
	2h 0m 10s

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