fix: implement uploadBytes for storage modular sdk

[johnsimeroth]

Description

This PR implements the uploadBytes storage function for the modular SDK, one of several unimplemented methods mentioned in #7483.

Related issues

#7483

Release Summary

Adds missing storage.uploadBytes implementation

Checklist

• I read the Contributor Guide and followed the process outlined there for submitting PRs.
  • Yes
• My change supports the following platforms;
  • Android
  • iOS
  • Other (macOS, web)
• My change includes tests;
  • e2e tests added or updated in packages/\*\*/e2e
  • jest tests added or updated in packages/\*\*/__tests__
• I have updated TypeScript types that are affected by my change. (N/A)
• This is a breaking change;
  • Yes
  • No

Test Plan

No new tests, but all existing storage tests still pass. I would have mirrored any tests for uploadBytesResumable, but I didn't see any for that either.

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🔥 My first PR here, LMK what you'd like to see different and I'm happy to make changes.

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Project	Deployment	Preview	Comments	Updated (UTC)
react-native-firebase	Ready	Preview	Comment	Sep 13, 2025 6:13pm

[CLAassistant]

All committers have signed the CLA.

[MichaelVerdon]

Can you write a test for this please?