[Android] instrumentation test use models from storage, not bundled with apk

[kirklandsign]

🚀 The feature, motivation and pitch

Right now we push pte files to apk resources, making apk size large, and also we see failure with loading the pte files. Ideally we should make pte separate from apk, and push to /data/local/tmp.

Alternatives

No response

Additional context

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RFC (Optional)

No response

cc @cbilgin