fix(android): reduce polyline update churn causing OOM

[lodev09]

Summary

Fixes CONSUMER-APP-44Y — fatal OutOfMemoryError at syncPolylineView/PolylineAnimator.update (19 events, 15 users). Trivial allocations fail with the 256MB heap exhausted; the polyline sync path is the hottest allocator, hammered by redundant Binder transactions into the GMS renderer:

• setWidth/setZIndex fired on every React commit even when unchanged (Polyline.setWidth is the literal crash frame)
• poly.color set on every animation frame
• Animation updates ran at display refresh — 120Hz devices doubled the churn
• Dirty-check used identity (===), but Fabric delivers new list instances per commit — content-equal coordinates re-parceled the full route and re-applied up to 512 gradient spans

Changes:

• Cap animation updates to ~60fps (MIN_UPDATE_INTERVAL_NANOS)
• Move strokeWidth/zIndex into PolylineAnimator with change-guards
• Guard per-frame poly.color in the single-color path (gradient path keeps the unconditional set — it clears stale spans, see fix(android): clear stale spans before setting polyline points #67)
• Structural equality on coordinates/strokeColors dirty-checks

Per-frame cost drops from 3–4 Binder transactions @120hz to 1 (setPoints) @≤60Hz for the common solid-color animated route. Companion consumer-app fix gates the live-tracking trailing-position updates that drove commits 5×/s.

Type of Change

• Bug fix
• New feature
• Breaking change
• Documentation update

Test Plan

• Traced crash line numbers (Sentry release 3.2.18+763) to beta.15–17 sources to confirm all prior OOM fixes (fix(android): cap gradient spans to prevent OOM on long polylines #66, fix(android): clear stale spans before setting polyline points #67, fix(android): oom crash in PolylineAnimator from redundant span allocations #69, fix(android): clean up polyline animator on view drop #72) were already present in crashing builds
• Verified gradient span-clearing behavior from fix(android): clear stale spans before setting polyline points #67 is preserved (unconditional color set before shrinking points)

Screenshots / Videos

N/A

Checklist

• I tested on iOS
• I tested on Android
• I tested on Web
• I updated the documentation (if needed)

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