Sam/posthog capture event fixes

[samholmes]

CHANGELOG

Does this branch warrant an entry to the CHANGELOG?

• Yes
• No

Dependencies

none

Requirements

If you have made any visual changes to the GUI. Make sure you have:

• Tested on iOS device
• Tested on Android device
• Tested on small-screen device (iPod Touch)
• Tested on large-screen device (tablet)

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Note

Fixes broken analytics by dispatching logEvent in Redux and plumbing an onLogEvent callback through fiat plugins, with PostHog global typing and usage updates.

• Analytics / Tracking:
  • Replace direct logEvent(...) with dispatch(logEvent(...)) in AccountReferralActions, RampCreateScene, and WalletListCreateRow.
  • Add onLogEvent callback to fiat plugin APIs (fiatPlugin.tsx, fiatPluginTypes.ts) and use it in amountQuotePlugin for Buy_Quote / Sell_Quote and *_Next events.
  • Add global PostHog typings (src/types/posthog.d.ts) and update tracking.ts to set/use global.posthog (remove TypeScript ignores).
• Type/Code Hygiene:
  • Add explicit React return types and stricter error typings in WalletListCreateRow.
• Docs:
  • Update CHANGELOG.md to note tracking fix and removal of change quote tracking.

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