refactor(ui): remove SPV badge from tx detail and history

SPV is the only verification method the wallet uses, so showing it as a
badge adds no information — if a transaction appears confirmed, it has
already passed Merkle verification.

- Remove the SPV chip from the transaction detail overlay
- Remove the Verificata column from the history list (desktop and mobile)
- Drop VerifiedText property from TransactionDetailsViewModel
- Drop the Verificata field from HistoryRow
- Remove the orphaned tx.verified loc key

src/App/ViewModels/MainWindowViewModel.Receive.cs

@@ -272,8 +272,7 @@ public partial class MainWindowViewModel
             History.Add(new HistoryRow(
                 tx.Height > 0 ? tx.Height.ToString() : "mempool",
                 (tx.DeltaSats >= 0 ? "+" : "") + Fmt(tx.DeltaSats, withLabel: false),
-                tx.Txid,
-                tx.Verified ? "✓ SPV" : "—"));
+                tx.Txid));
 
         Addresses.Clear();
         foreach (var a in cache.Addresses)