Use precise native style updates in @taffyjs/yoga

[hyfdev]

Context

@taffyjs/node currently applies setStyle(node, input) as a complete Style replacement. To preserve Yoga's per-property setter semantics, @taffyjs/yoga keeps the complete logical Yoga declaration state, translates it into a complete Taffy Style, and replaces the native Style after each supported setter.

This is semantically correct, but it converts and writes unaffected native fields. @taffyjs/node is gaining an API for precise style-field updates.

Follow-up

Once that API is available:

• use it for the ordinary @taffyjs/yoga setter path, updating only the Taffy fields affected by the changed Yoga declaration;
• handle setters that expand to multiple Taffy fields, such as logical edges and the flex shorthand, as one precise derived update;
• retain the complete logical Yoga declaration state as the source of truth because translated Taffy Style is lossy and cannot reconstruct every Yoga declaration;
• retain complete Style replacement where it is semantically appropriate, such as initialization, reset, copy, or a broad Config/direction retranslation;
• preserve current public behavior, getter semantics, dirty behavior, failure atomicity, and Yoga-oracle compatibility.

Acceptance criteria

• Sequential property setters do not reset unrelated declarations and continue to match Yoga 3.2.1 behavior.
• Declared-style getters still read the current Yoga declaration state; computed layout remains derived by Taffy.
• Unsupported or invalid setters still fail without partially updating either state representation.
• The normal property-setter path no longer rebuilds and replaces a complete native Style when a precise update is sufficient.

This is an internal synchronization optimization, not a public API change to @taffyjs/yoga.