feat: Add IOTA derivation path (#3653)

Add IOTA derivation path since they use `ed25519`, which our default
resolution logic doesn't allow for SLIP-44 defined chains.

<!-- CURSOR_SUMMARY -->
---

> [!NOTE]
> Adds the IOTA ed25519 derivation path `m/44'/4218'` to the supported
snaps derivation paths.
> 
> <sup>Written by [Cursor
Bugbot](https://cursor.com/dashboard?tab=bugbot) for commit
9fbbbd8. This will update automatically
on new commits. Configure
[here](https://cursor.com/dashboard?tab=bugbot).</sup>
<!-- /CURSOR_SUMMARY -->

Author: FrederikBolding

packages/snaps-utils/src/derivation-paths.ts

@@ -185,6 +185,11 @@ export const SNAPS_DERIVATION_PATHS: SnapsDerivationPath[] = [
     curve: 'ed25519',
     name: 'Massa',
   },
+  {
+    path: ['m', `44'`, `4218'`],
+    curve: 'ed25519',
+    name: 'IOTA',
+  },
 ];
 
 /**