split wallet state into evm-wallet and monero-wallet

- Move EVM state/methods to evm-wallet.svelte.ts with its own init/login/logout/accountType
- Move Monero state/methods to monero-wallet.svelte.ts with its own init/login/logout/accountType
- Each wallet is fully self-contained and pages import only their wallet's state
- evm-wallet imports monero-wallet internally for full app init (no circular dep)
- Welcome/settings/tx pages import evmWallet
- Monero pages import moneroWallet
- Delete old wallet.svelte.ts orchestrator

apps/desktop/src/routes/index.svelte

@@ -1,5 +1,5 @@
 <script lang="ts">
-	import { wallet } from '$lib/states/wallet.svelte.js'
+	import { evmWallet as wallet } from '$lib/states/evm-wallet.svelte.js'
 	import { Button } from '$lib/components/ui/button/index.js'
 	import { Card, CardContent, CardDescription, CardHeader, CardTitle } from '$lib/components/ui/card/index.js'
 	import { navigate } from 'sv-router/generated'