[FR]: Prefix symbols from Firebase's nanopb dependency

### Description

1. You require nanopb as part of your Firebase SDK. If we're using nanopb in our own application, the version we're using can conflict with the version you're using. This creates "Duplicate Symbols" errors during linking. This creates a headache when adding or updating nanopb in applications.
2. Currently you leave developers to deal with this issue, where we have to manually prefix our copy of nanopb every time it's updated.
3. Prefix your version of nanopb so that other developers don't need to concern themselves with the inner workings of the Firebase SDK

### API Proposal

_No response_

### Firebase Product(s)

Crashlytics

Start by inspecting the Crashlytics portion of the Firebase SDK and its nanopb dependency and build configuration. Determine how symbols are exposed during linking; done means Firebase's nanopb symbols are consistently prefixed and applications no longer encounter duplicate-symbol conflicts when using their own nanopb version.

Written by the indexing model from the issue text.