fix: add referrerPolicy to the iframe

[jd1378]

Description

This fixes the problem of iframe not connecting to https://secure.walletconnect.org/sdk?projectId=xxxx due to missing referrer

(this issue was not present with 5.1.1 somehow)

Type of change

• [x] Bug fix (non-breaking change which fixes an issue)

Checklist

• [x] Code in this PR is covered by automated tests (Unit tests, E2E tests)
• [x] My changes generate no new warnings
• [x] I have reviewed my own code
• [x] I have filled out all required sections

[vercel[bot]]

@jd1378 is attempting to deploy a commit to the WalletConnect Team on Vercel.

A member of the Team first needs to authorize it.

[vercel[bot]]

The latest updates on your projects. Learn more about Vercel for Git ↗︎

Name	Status	Preview	Updated (UTC)
web3modal-gallery	✅ Ready (Inspect)	Visit Preview	Sep 5, 2024 0:25am

[tomiir]

https://developer.mozilla.org/en-US/docs/Web/HTTP/Headers/Referrer-Policy#strict-origin-when-cross-origin_2 Closing as this is the default value 🙏

[tomiir]

@jd1378 is this still happening in latest versions?

[jd1378]

default is not same as explicitly setting it I am still patching this in latest versions (without checking after the update), so I don't know if it still happens or not

it has something to do with my CSP, as far as I remember