fix(ios): never lay out the selection toolbar from non-finite bounds (0.3.6)

[markm39]

Problem

OpenNotes 1.2 App Store crash group (5 crashes, symbolicated):

CA::Layer::set_position  ->  -[CALayer setFrame:]
MobileInkCanvasView.updateSelectionToolbarFrame()   (MobileInkCanvasView.swift:565)
MobileInkCanvasView.notifySelectionChange()
MobileInkCanvasView.applyBase64Data(_:)

Reason: CALayerInvalidGeometry: CALayer position contains NaN.

• A pooled canvas slot with a live selection was cleared. The engine's clear() kept the stale selection (fixed at the source in 0.3.5), so getSelectionBounds returned ±FLT_MAX.
• selectionBoundsInView guarded with rect.width > 0. CGRect.width is the standardized width, so +inf passed the check, midX became inf - inf = NaN, and setFrame aborted.
• Reproduced exactly: the shipped engine's post-clear() bounds, run through the shipped toolbar math into a real CALayer, raise the same CALayerInvalidGeometry.

Fix

• selectionBoundsInView rejects non-finite rects, and is now the only place selection bounds are read. Hit-testing (selectionBoundsContain, selectionHandleHitTest, touchesBegan) and notifySelectionChange use it, so onInkSelectionChange sends null bounds instead of NaN to JS.
• The podspec reads its version from package.json. It was stuck at 0.3.2, so the CocoaPods version and v… source tag no longer drift from the npm package.

Evidence

• Guard checked with the production input: ±FLT_MAX returns nil, a NaN point returns nil, and a normal selection is unchanged.
• swiftc -typecheck of the module passes against the iOS 26.5 simulator SDK and the React framework.
• jest 82/82, typecheck, test:native:selection-smoke and test:native:eraser-smoke pass.
• pod ipc spec reports version 0.3.6, tag v0.3.6.

Release

0.3.6 with a CHANGELOG entry.