make variant modal less annoying (#19998)

packages/opencode/src/cli/cmd/tui/component/dialog-model.tsx

@@ -136,7 +136,13 @@ export function DialogModel(props: { providerID?: string }) {
 
   function onSelect(providerID: string, modelID: string) {
     local.model.set({ providerID, modelID }, { recent: true })
-    if (local.model.variant.list().length > 0) {
+    const list = local.model.variant.list()
+    const cur = local.model.variant.selected()
+    if (cur === "default" || (cur && list.includes(cur))) {
+      dialog.clear()
+      return
+    }
+    if (list.length > 0) {
       dialog.replace(() => <DialogVariant />)
       return
     }