Mobile Replay: iOS: Document multi click needs swizzling

[bruno-garcia]

We document everything that requires swizzling on this page:

https://docs.sentry.io/platforms/apple/guides/ios/configuration/swizzling/

Session Replay has "Multi click", which requires swizzling and should be explicitly called out.

[getsantry]

Routing to @getsentry/product-owners-replays for triage ⏲️