[tests] Make the simulator the default runtime identifier when running test suites from the command line.

[rolfbjarne]

Because simulator is where we most commonly run tests.

And hardcode arm64 - if x64 is ever needed, and I'm bugged enough to add
auto-detection, I'll do it then.

[vs-mobiletools-engineering-service2]

💻 [CI Build] Tests on macOS M1 - Mac Monterey (12) passed 💻

✅ All tests on macOS M1 - Mac Monterey (12) passed.

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Hash: 9063d858d160d15741ecb6217de516712ec4cf03 [PR build]

[vs-mobiletools-engineering-service2]

📚 [CI Build] Artifacts 📚

Packages generated

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Hash: [PR build]

[vs-mobiletools-engineering-service2]

💻 [CI Build] Tests on macOS X64 - Mac Sonoma (14) passed 💻

✅ All tests on macOS X64 - Mac Sonoma (14) passed.

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Hash: 9063d858d160d15741ecb6217de516712ec4cf03 [PR build]

[vs-mobiletools-engineering-service2]

💻 [CI Build] Tests on macOS M1 - Mac Ventura (13) passed 💻

✅ All tests on macOS M1 - Mac Ventura (13) passed.

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Hash: 9063d858d160d15741ecb6217de516712ec4cf03 [PR build]

[vs-mobiletools-engineering-service2]

❌ [CI Build] Tests on macOS M1 - Mac Big Sur (11) failed ❌

Tests timed out

Pipeline on Agent
Hash: 9063d858d160d15741ecb6217de516712ec4cf03 [PR build]

[vs-mobiletools-engineering-service2]

🚀 [CI Build] Test results 🚀

Test results

✅ All tests passed on VSTS: test results.

🎉 All 98 tests passed 🎉

Tests counts

✅ cecil: All 1 tests passed. Html Report (VSDrops) Download
✅ dotnettests (iOS): All 1 tests passed. Html Report (VSDrops) Download
✅ dotnettests (MacCatalyst): All 1 tests passed. Html Report (VSDrops) Download
✅ dotnettests (macOS): All 1 tests passed. Html Report (VSDrops) Download
✅ dotnettests (Multiple platforms): All 1 tests passed. Html Report (VSDrops) Download
✅ dotnettests (tvOS): All 1 tests passed. Html Report (VSDrops) Download
✅ framework: All 2 tests passed. Html Report (VSDrops) Download
✅ fsharp: All 4 tests passed. Html Report (VSDrops) Download
✅ generator: All 1 tests passed. Html Report (VSDrops) Download
✅ install-source: All 1 tests passed. Html Report (VSDrops) Download
✅ interdependent-binding-projects: All 4 tests passed. Html Report (VSDrops) Download
✅ introspection: All 4 tests passed. Html Report (VSDrops) Download
✅ linker: All 40 tests passed. [attempt 2] Html Report (VSDrops) Download
⚠️ mac-binding-project: No tests selected. Html Report (VSDrops) Download
⚠️ mmp: No tests selected. Html Report (VSDrops) Download
⚠️ mononative: No tests selected. Html Report (VSDrops) Download
✅ monotouch (iOS): All 7 tests passed. Html Report (VSDrops) Download
✅ monotouch (MacCatalyst): All 7 tests passed. Html Report (VSDrops) Download
✅ monotouch (macOS): All 8 tests passed. [attempt 2] Html Report (VSDrops) Download
✅ monotouch (tvOS): All 7 tests passed. Html Report (VSDrops) Download
✅ msbuild: All 2 tests passed. [attempt 2] Html Report (VSDrops) Download
⚠️ mtouch: No tests selected. Html Report (VSDrops) Download
⚠️ xammac: No tests selected. Html Report (VSDrops) Download
✅ xcframework: All 4 tests passed. Html Report (VSDrops) Download
✅ xtro: All 1 tests passed. Html Report (VSDrops) Download

Pipeline on Agent
Hash: 9063d858d160d15741ecb6217de516712ec4cf03 [PR build]

[vs-mobiletools-engineering-service2]

❌ [CI Build] Tests on macOS M1 - Mac Big Sur (11) failed ❌

Tests timed out

Pipeline on Agent
Hash: 9063d858d160d15741ecb6217de516712ec4cf03 [PR build]

[vs-mobiletools-engineering-service2]

❌ [CI Build] Windows Integration Tests failed ❌

❌ Failed ❌

Pipeline on Agent
Hash: 9063d858d160d15741ecb6217de516712ec4cf03 [PR build]

[vs-mobiletools-engineering-service2]

💻 [CI Build] Windows Integration Tests passed 💻

✅ All Windows Integration Tests passed.

Pipeline on Agent
Hash: 9063d858d160d15741ecb6217de516712ec4cf03 [PR build]

[vs-mobiletools-engineering-service2]

💻 [CI Build] Tests on macOS M1 - Mac Big Sur (11) passed 💻

✅ All tests on macOS M1 - Mac Big Sur (11) passed.

Pipeline on Agent
Hash: 9063d858d160d15741ecb6217de516712ec4cf03 [PR build]