v31.3.0-rc.2

✨ Features

• Add expire_ts compatibility to matrixRTC (#4032). Contributed by @toger5.
• Element-R: support for migration of the room list from legacy crypto (#4036). Contributed by @richvdh.
• Element-R: check persistent room list for encryption config (#4035). Contributed by @richvdh.
• Support optional MSC3860 redirects (#4007). Contributed by @turt2live.

🐛 Bug Fixes

• WebR: migrate the megolm session imported flag (#4037). Contributed by @BillCarsonFr.
• ElementR: fix emoji verification stalling when both ends hit start at the same time (#4004). Contributed by @uhoreg.
• Dependencies: Bump wasm bindings version to 4.3.0 (#4042). Contributed by @BillCarsonFr.
• Element R: emit events when devices have changed (#4019). Contributed by @uhoreg.
• ElementR: report invalid keys rather than failing to restore from backup (#4006). Contributed by @uhoreg.
• Make timeline a getter (#4022). Contributed by @florianduros.
• Implement getting verification cancellation info in Rust crypto (#3947). Contributed by @uhoreg.
• Fix crypto migration for megolm sessions with no sender key (#4024). Contributed by @richvdh.