Improved sign messages UI, other UI tweaks and bug fixes

What's New

• More clearer UI for signing messages
• Make revealing your seed phrase more accessible — it's now available as "Show Seed Phrase" in the Settings tab
• Other UI tweaks
• Performance improvements

Fixes

• Fix: WalletConnect using mobile linking crashes if the chain is disabled
• Fix: some memory leaks
• Fix: Sometimes crashes when disabling a chain in Settings
• Fix: hang at splash screen at launch
• Fix: Launch swap service from token to dapp browser should always switch to correct chain
• Other fixes