Mitra Profil: WhatsApp + Telegram brand glyphs

Replaces the generic chat_bubble + send Material icons with the
official WhatsApp + Telegram glyphs from font_awesome_flutter. Adds
the package as a runtime dep; FA brand glyphs are CC BY 4.0 and the
package itself is MIT.

Visual style is kept consistent with the other rows (pink-soft tile
backing, brand-pink glyph fill) rather than full-brand colors —
matches the figma's monochrome tile pattern.

Co-Authored-By: Claude Opus 4.7 (1M context) <noreply@anthropic.com>

mitra_app/pubspec.yaml

@@ -32,6 +32,9 @@ dependencies:
   go_router: ^13.2.1
   flutter_local_notifications: ^21.0.0
   url_launcher: ^6.3.0
+  # Brand glyphs (WhatsApp, Telegram) for the Profil menu. Material has
+  # no built-in brand icons. Ships an icon font, no SVG plumbing needed.
+  font_awesome_flutter: ^10.7.0
 
 dev_dependencies:
   flutter_test: