refactor: invert swap fromToken and fromChain dependency

[micaelae]

Description

Changelog

CHANGELOG entry:

Related issues

Fixes:

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Screenshots/Recordings

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• I've completed the PR template to the best of my ability
• I’ve included tests if applicable
• I’ve documented my code using JSDoc format if applicable
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[metamaskbot]

✨ Files requiring CODEOWNER review ✨

🔄 @MetaMask/swaps-engineers (13 files, +243 -348)

• 📁 test/
  • 📁 data/
    • 📁 bridge/
      • 📄 mock-bridge-store.ts +55 -1
• 📁 ui/
  • 📁 ducks/
    • 📁 bridge/
      • 📄 actions.ts +30 -82
      • 📄 bridge.ts +23 -23
      • 📄 selectors.test.ts +28 -3
      • 📄 selectors.ts +43 -36
      • 📄 types.ts +1 -1
      • 📄 utils.ts +15 -22
  • 📁 hooks/
    • 📁 bridge/
      • 📄 useBridgeExchangeRates.ts +20 -102
      • 📄 useBridgeQueryParams.test.ts +17 -0
      • 📄 useBridgeQueryParams.ts +4 -45
      • 📄 useBridging.test.ts +1 -1
      • 📄 useTokenAlerts.test.ts +2 -0
  • 📁 pages/
    • 📁 bridge/
      • 📁 prepare/
        • 📄 prepare-bridge-page.tsx +4 -32