[EPIC] FCL WalletConnect + Discovery Improvements

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PENDING FLIPS:

• [ ] https://github.com/onflow/flips/pull/240
• [x] https://github.com/onflow/flips/issues/270

FCL-JS TICKETS

• [ ] https://github.com/onflow/fcl-js/issues/1881
• [x] https://github.com/onflow/fcl-js/issues/1869
• [x] https://github.com/onflow/fcl-js/issues/1871
• [ ] https://github.com/onflow/fcl-js/issues/1864
• [ ] https://github.com/onflow/fcl-js/issues/1862

FCL-DISCOVERY TICKETS

• [x] https://github.com/onflow/fcl-discovery/issues/183
• [x] https://github.com/onflow/fcl-discovery/issues/166
• [x] https://github.com/onflow/fcl-discovery/issues/188
• [x] https://github.com/onflow/fcl-discovery/pull/190

### Misc
- [ ] https://github.com/onflow/fcl-js/issues/1864