Track stale resolved fonts in SkiaParagraphIntrinsics

[adamglin0]

This PR improves stale font detection in Skiko text layout by tracking non-immutable font resolution states.

• Adds an optional onFontResolved callback path from ParagraphLayouter to ParagraphBuilder.
• Reports non-immutable typeface resolution results during style conversion and span pre-resolution.
• Tracks resolved typeface states in SkiaParagraphIntrinsics and implements hasStaleResolvedFonts to detect when previously resolved fonts become stale.

Fixes CMP-8231 Async font loading support for iOS targets

Release Notes

Fixes - Multiple Platforms

• Detect stale resolved fonts in Skia paragraph intrinsics to better handle async font resolution updates.
  • Propagate font resolution callbacks through paragraph building and layout layers.

[adamglin0]

This PR fixes the issue mentioned in #2787.