Remove request URL from error strings

[mosherBT]

Why

Error strings echoed the request URL back to the host app. On targeting that URL carries the hashed email and advertising ID, so anything logging the error logs identifiers.

What Changed

• android_sdk: error message uses response.code(), not $response — whose toString() includes url=
• android_sdk: read errorBody()?.string(); the old code printed the ResponseBody identity hash
• android_sdk: dropped the deep link URL from the prefixedIdFromUrl failure log, which wrote oeid to logcat

How to Test

• ./gradlew test passes

Notes

• Requires release