Call inherited host node methods on the host node in strict refs

[adityasingh2400]

Fixes #506.

getOrCreateStrictRef builds the strict ref with Object.create(node), so a method that lives on the host node prototype chain is still reachable from the wrapper but gets invoked with the wrapper as its receiver. React Native host node methods read internals off this, and the wrapper does not carry those internals, so ref.current.focus() and ref.current.blur() silently do nothing on native while getNativeRef().focus() still works. Reads keep working because own properties of the node resolve through the prototype chain, which is why only the imperative methods broke.

This walks the node's prototype chain once per node and re-exposes each inherited method as an own property that calls through to the node, so the receiver stays correct. Own methods of the node are left alone since React Native assigns those as closures over the node, and accessors are left on the prototype chain since they read plain instance fields the wrapper already inherits. The binding runs before the strict-dom overrides are defined so the viewport-scaled getBoundingClientRect still wins.

Added a regression test in html-refs-test.native.js that mounts an html.input over a host node mock whose focus and blur live on the prototype, then asserts the receiver is the host node. It fails on main and passes with this change. Ran the full package suite (19 suites, 897 tests), flow check, eslint, and prettier, all clean.