fix(opencode): command palette mouse hover highlights wrong item (anomalyco#7721)

Author: kitlangton

packages/opencode/src/cli/cmd/tui/ui/dialog-select.tsx

@@ -255,7 +255,7 @@ export function DialogSelect<T>(props: DialogSelectProps<T>) {
                           props.onSelect?.(option)
                         }}
                         onMouseOver={() => {
-                          const index = filtered().findIndex((x) => isDeepEqual(x.value, option.value))
+                          const index = flat().findIndex((x) => isDeepEqual(x.value, option.value))
                           if (index === -1) return
                           moveTo(index)
                         }}