fix(android): isolate Hands file provider

[bytemain]

Problem

Android manifest merger identifies providers by android:name. SDK 0.11.1 declares androidx.core.content.FileProvider, which collides with any host app that already declares the standard FileProvider class even when authorities differ. Raft therefore cannot consume 0.11.1.

Changes

• Add a no-behavior-change HandsFileProvider : FileProvider subclass.
• Reference the unique subclass from the SDK manifest while retaining ${applicationId}.hands.fileprovider and hands_file_paths.
• Advance the SDK-reported/default publication version to 0.11.2 because 0.11.1 is immutable.

Follow-up

Publish tag android-sdk-v0.11.2 after merge. Mobile PR #1267 already targets 0.11.2 and retains its own standard FileProvider without manifest overrides.

Testing

• publishReleasePublicationToMavenLocal -PVERSION_NAME=0.11.2 passed with AAR and native-symbol classifier.
• Raft :androidApp:processDebugMainManifest passed against local SDK 0.11.2; both provider classes/authorities coexist without tools:replace.
• Raft :androidApp:copyHandsNativeSymbols passed for 0.11.2.
• git diff --check passed.

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