fix(tests): fix flaky getSnapshotsSince test #4810

Job	Run time
sdk-compat / Deno Runtime	1m 54s
e2e / 🧪 CLI v3 tests (windows-latest - npm)	3m 30s
sdk-compat / Node.js 22.12 (ubuntu-latest)	2m 4s
sdk-compat / Node.js 20.20 (ubuntu-latest)	1m 46s
e2e / 🧪 CLI v3 tests (windows-latest - pnpm)	3m 55s
e2e / 🧪 CLI v3 tests (ubuntu-latest - npm)	1m 47s
sdk-compat / Cloudflare Workers	2m 6s
sdk-compat / Bun Runtime	2m 3s
e2e / 🧪 CLI v3 tests (ubuntu-latest - pnpm)	1m 46s
units / webapp / 🧪 Unit Tests: Webapp (6, 8)	3m 48s
units / webapp / 🧪 Unit Tests: Webapp (4, 8)	5m 20s
units / packages / 🧪 Unit Tests: Packages (1, 1)	8m 24s
typecheck / typecheck	6m 7s
units / webapp / 🧪 Unit Tests: Webapp (2, 8)	4m 1s
units / webapp / 🧪 Unit Tests: Webapp (1, 8)	5m 51s
units / internal / 🧪 Unit Tests: Internal (4, 8)	5m 18s
units / webapp / 🧪 Unit Tests: Webapp (7, 8)	5m 49s
units / webapp / 🧪 Unit Tests: Webapp (8, 8)	2m 40s
units / internal / 🧪 Unit Tests: Internal (2, 8)	9m 42s
units / internal / 🧪 Unit Tests: Internal (8, 8)	3m 21s
units / internal / 🧪 Unit Tests: Internal (5, 8)	4m 12s
units / internal / 🧪 Unit Tests: Internal (1, 8)	5m 32s
units / webapp / 🧪 Unit Tests: Webapp (3, 8)	3m 18s
units / internal / 🧪 Unit Tests: Internal (6, 8)	5m 4s
units / internal / 🧪 Unit Tests: Internal (3, 8)	6m 23s
units / webapp / 🧪 Unit Tests: Webapp (5, 8)	7m 52s
units / internal / 🧪 Unit Tests: Internal (7, 8)	5m 37s
units / webapp / 📊 Merge Reports	37s
units / packages / 📊 Merge Reports	32s
units / internal / 📊 Merge Reports	26s
	2h 0m 45s

Provide feedback