feat(call): add caller phone number to offer call event

[vinikjkkj]

#2154

[whiskeysockets-bot]

Thanks for opening this pull request and contributing to the project!

The next step is for the maintainers to review your changes. If everything looks good, it will be approved and merged into the main branch.

In the meantime, anyone in the community is encouraged to test this pull request and provide feedback.

✅ How to confirm it works

If you’ve tested this PR, please comment below with:

Tested and working ✅

This helps us speed up the review and merge process.

📦 To test this PR locally:

# NPM
npm install @whiskeysockets/baileys@WhiskeySockets/Baileys#add-pn-on-call-offer

# Yarn (v2+)
yarn add @whiskeysockets/baileys@WhiskeySockets/Baileys#add-pn-on-call-offer

# PNPM
pnpm add @whiskeysockets/baileys@WhiskeySockets/Baileys#add-pn-on-call-offer

If you encounter any issues or have feedback, feel free to comment as well.

[Salientekill]

Vini, would it be possible to detect calls in groups where the project number wasn't mentioned in the call?

[github-actions]

This PR is stale because it has been open for 14 days with no activity. Remove the stale label or comment or this will be closed in 14 days

[CDPPF]

Tested and working ✅

[purpshell]

is it known if we get caller_lid sometimes rather than pn? It would be good to be consistent with the addressingMode & Alt strategy