fix(editor): replace unaligned native photo filters library

[sjug]

Type of change(s)

• Bug fix
• Feature / enhancement
• Infrastructure / tooling (CI, build, deps, tests)
• Documentation

What changed and why

• Removed the androidphotofilters dependency, which ships a prebuilt arm64-v8a/libNativeImageProcessor.so with 4 KB ELF segment alignment.
• Removed the explicit System.loadLibrary("NativeImageProcessor") call from the editor.
• Added a small Kotlin compatibility shim for the AndroidPhotoFilters API used by Gallery, including pure-Kotlin pixel operations.
• Removed stale Aligned16KB lint baseline entries for the deleted native library.

Android 15+ / target SDK 35+ apps need native libraries to support 16 KB page-size devices. Since the upstream AndroidPhotoFilters native library is unmaintained and fails that check, this removes the native dependency from Gallery's APK entirely.

Tests performed

• Clean clone of this branch on the Android build host.
• ./gradlew :app:assembleFossDebug
• Verified the APK no longer contains libNativeImageProcessor.so.
• Verified all remaining arm64-v8a and x86_64 native libraries have 0x4000 ELF LOAD alignment with readelf -lW.
• Verified APK zip alignment with zipalign -c -P 16 -v 4.
• Installed the debug APK on an Android 16 Pixel device and confirmed the app launches without the 16 KB ELF compatibility warning.

Before & after preview

N/A — no UI changes.

Closes the following issue(s)

N/A — Android 16 KB page-size compatibility fix.

Checklist

• I read the contribution guidelines.
• I manually tested my changes on device/emulator (if applicable).
• I updated the "Unreleased" section in CHANGELOG.md (if applicable).
• I have self-reviewed my pull request (no typos, formatting errors, etc.).
• I understand every change in this pull request.