fix(frontend): fixes component size on IPhone (#4947)

# Motivation

The new send form displays the amount component too big on iPhone.


# Tests

**before:**

![image](https://github.com/user-attachments/assets/687aa0c7-edc8-4717-8f55-1f055e4e6b61)


**after:**

![image](https://github.com/user-attachments/assets/48a07eb3-bdde-4c38-af94-619e6705438f)

Author: BonomoAlessandro

src/frontend/src/lib/components/tokens/TokenInput.svelte

@@ -66,7 +66,7 @@
 </script>
 
 <div
-	class="rounded-lg border border-solid p-5 text-left transition first:mb-2"
+	class="rounded-lg border border-solid p-5 text-left duration-300 first:mb-2"
 	class:bg-brand-subtle-10={focused}
 	class:border-brand-subtle-20={focused}
 	class:bg-secondary={!focused}