Compose-backed List, JNI import fixes, Fragment mount handling

[colemancda]

Summary

• Backs AndroidListView with a Jetpack Compose LazyColumn (via a new ComposeListView) instead of the legacy ArrayAdapter/android.widget.ListView path.
• Fixes several compile breaks from the PureSwift/Android migration off JavaKit/JavaRuntime onto SwiftJava: stale imports, an ambiguous ListAdapter reference, and non-exhaustive switches over AndroidTarget.Storage after .fragment was added.
• Fixes Fragment logging to use the same JavaClass<AndroidUtil.Log>() pattern as the rest of the codebase (previously referenced AndroidLogger/LogTag, which don't exist anywhere in this package).
• Adds a missing Foundation import in ImageView.swift for URL.
• Adds the compose-foundation dependency needed for LazyColumn.
• Pins the local Swift toolchain via .swift-version to 6.3.2, matching the installed Android SDK.

Test plan

• swift build succeeds on macOS host
• Cross-compiled for aarch64-unknown-linux-android and ran on an emulator (API 36); list renders and updates live as items are added