chore: do not show preview window for "line" picker

Author: lambdalisue

denops/fall/_assets/default.custom.ts

@@ -280,6 +280,9 @@ export const main: Entrypoint = (
       ...builtin.action.defaultBufferActions,
     },
     defaultAction: "open",
+    coordinator: builtin.coordinator.modern({
+      hidePreview: true,
+    }),
   });
 
   definePickerFromSource(