Add text orphan and push-out UI test

[Kyle-Ye]

Summary

• Add a shared text example comparing default, enabled, and disabled orphan handling.
• Expose View.avoidsOrphans(_:) through the SwiftUI SPI interface used by the comparison target.
• Add snapshot UI coverage for the text orphan and paragraph push-out behavior.

Impact

The UI test now captures how short final lines are handled consistently across both renderers.

Validation

Source diff validation passed.

[tuist]

🛠️ Tuist Run Report 🛠️

Tests 🧪

Scheme	Status	Cache hit rate	Tests	Skipped	Ran	Commit
OpenSwiftUI	❌	0 %	1003	0	1003	22f25bd4e

Failed Tests ❌

• OpenSwiftUI: 13 failed tests (View all)

• metricsOfWrappedLines() · OpenSwiftUICoreTests · MetricsTests
  (result.size.height → 74.0).isApproximatelyEqual(to: FixedFontMetrics.lineHeight * 4 → 64.0)

• metricsRespectsLineLimit() · OpenSwiftUICoreTests · MetricsTests
  (limited.size.height → 37.0).isApproximatelyEqual(to: FixedFontMetrics.lineHeight * 2 → 32.0)

• optionalViewAliasConsumerTracksPresentAndNilSource() · OpenSwiftUITests · ViewAliasTests
  (nilDisplayList → "(display-list (item #:identity 8 #:version 15 (frame (0.0 0.0; 100.0 100.0)) (effect #:opacity 1.0 (item #:identity 7 #:versi…

• optionalViewAliasUsage(sourceIsPresent:) · OpenSwiftUITests · ViewAliasTests
  (displayList → "(display-list (item #:identity 12 #:version 22 (frame (0.0 0.0; 100.0 100.0)) (effect #:opacity 1.0 (item #:identity 11 #:versio…

• optionalViewAliasDynamicProperty() · OpenSwiftUITests · ViewAliasTests
  (displayList → "(display-list (item #:identity 10 #:version 19 (frame (0.0 0.0; 100.0 100.0)) (effect #:opacity 1.0 (item #:identity 9 #:version…

Showing 5 of 13 failed tests. See links above for full details.

Builds 🔨

Scheme	Status	Duration	Commit
OpenSwiftUI	✅	1m 34s	22f25bd4e