fix(cli): resolve suite shard enumeration destination

What changed

• Normalizes shard-plan destinations before suite-level test enumeration.
• Resolves platform-only simulator destinations such as platform=iOS Simulator into concrete simulator destinations with an id.
• Preserves already-concrete destinations that include id or name.
• Adds regression coverage for suite shard planning with a platform-only iOS simulator destination.

Why

Suite granularity calls xcodebuild test-without-building -enumerate-tests after the build-for-testing phase. The build run succeeded, but enumeration failed because Tuist passed only platform=iOS Simulator, and Xcode could not match that broad destination from .xctestproducts.

Root Cause

The normal build path resolves a concrete simulator destination before invoking Xcode, but shard planning discarded that shape and sent only a platform-level simulator destination into XCTestEnumerator. Xcode accepts enough information to build the test products, but test-without-building -enumerate-tests -testProductsPath needs a concrete simulator destination to enumerate suites reliably.

Impact

Suite-level sharding now enumerates tests using the same kind of concrete simulator destination that the build/test path already resolves, avoiding error 70 for platform-only simulator destinations.

Validation

• Ran swiftformat on the two touched files.
• Ran git diff --check successfully.
• Built the committed iOS fixture:
  • xcodebuild -project examples/xcode/xcode_project_with_tests/App.xcodeproj -scheme App build-for-testing -destination "platform=iOS Simulator,id=99A1ADBF-B5DD-402F-B8DB-BDEBA7220E04" -derivedDataPath /private/tmp/tuist-suite-shard-e2e.ogeIBI/DerivedData -testProductsPath /private/tmp/tuist-suite-shard-e2e.ogeIBI/TestProducts.xctestproducts CODE_SIGNING_ALLOWED=NO CODE_SIGNING_REQUIRED=NO CODE_SIGN_IDENTITY=
• Reproduced the reported failure:
  • xcodebuild test-without-building -enumerate-tests -testProductsPath /private/tmp/tuist-suite-shard-e2e.ogeIBI/TestProducts.xctestproducts -destination "platform=iOS Simulator"
  • Result: exit 70 with Unable to find a device matching the provided destination specifier: { platform:iOS Simulator }.
• Verified the fixed destination shape:
  • Booted simulator 99A1ADBF-B5DD-402F-B8DB-BDEBA7220E04.
  • xcodebuild test-without-building -enumerate-tests -testProductsPath /private/tmp/tuist-suite-shard-e2e.ogeIBI/TestProducts.xctestproducts -destination "platform=iOS Simulator,id=99A1ADBF-B5DD-402F-B8DB-BDEBA7220E04"
  • Result: exit 0 and full suite enumeration:
    • AppFrameworkTests/AppFrameworkTests/example()
    • AppTests/AppTests/example()
    • AppTests/AppTests/parameterized(value:)