Remove @ionic/react IonIcon dependency (used for 3 icons)

[talissoncosta]

Problem

@ionic/react and ionicons are imported for just 3 icons across the codebase:

• InfoMessage.tsx
• SuccessMessage.tsx
• AccordionCard.tsx
• project-components.js

This adds an entire icon library dependency for 3 uses.

Solution

1. Inline the 3 SVGs (or add them to the Icon system after Refactor Icon.tsx: split 70 inline SVGs into individual files #7019)
2. Remove @ionic/react and ionicons from package.json

Acceptance criteria

• 3 icons render identically
• @ionic/react and ionicons removed from dependencies
• Bundle size reduction measurable

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Part of the Design System Audit (#6606) · Epic: #6882