fix(tui): open model selector at top (#36679)

Co-authored-by: Dax Raad <d@ironbay.co>
Co-authored-by: opencode-agent[bot] <opencode-agent[bot]@users.noreply.github.com>

packages/tui/src/component/dialog-model.tsx

@@ -154,6 +154,7 @@ export function DialogModel(props: { providerID?: string }) {
       skipFilter={true}
       title={title()}
       current={local.model.current()}
+      focusCurrent={false}
     />
   )
 }