Support canonical icon provider aliases

[artiphishle]

Summary

Fixes icon provider resolution for serialized route icons that use canonical provider identifiers such as material-community.

What changed

• Added provider alias normalization in resolveExpoIconComponent.
• Maps material-community and material-community-icons to Expo's MaterialCommunityIcons export.
• Keeps existing direct Expo provider names working.
• Keeps unknown providers falling back to Ionicons.
• Added tests for canonical aliases.
• Added a patch changeset.

Why

Templates serialize route icons with provider: 'material-community', but Surface previously looked up provider strings directly on @expo/vector-icons. Since Expo exports MaterialCommunityIcons, not material-community, icons silently fell back to Ionicons and many route icon names failed to render.

Verification

Run:

bun run build
bun run lint:fix
bun run test
bun run changeset:status