Replace the swizzle-based approach with a proper WKURLSchemeHandler
registered via DittoBridgeViewController.webViewConfiguration(for:).
This runs before the WKWebView is created, so sbx:// iframe requests
are intercepted correctly — unlike the previous attempt which
registered the handler too late (in capacitorDidLoad).
Each sandbox loads from sbx://<sandbox-id>/path, giving every sandbox
a unique web origin with full localStorage/cookie isolation.
Alex Gleason
02cd63dbd9