Fix Install in the missing-dependency modal (#489)

* Fix Install in the missing-dependency modal

The "Missing required dependency" modal calls download_game without
enableUpdates, but the command requires it, so clicking Install fails with:

  invalid args `enableUpdates` for command `download_game`: command
  download_game missing required key enableUpdates

Pass it the same way the library page does: true when installing the
latest version.

* Update DependencyRequiredModal.vue

---------

Co-authored-by: DecDuck <declanahofmeyr@gmail.com>

desktop/main/components/DependencyRequiredModal.vue

@@ -95,6 +95,7 @@ async function install() {
       versionId: model.value.versionId,
       installDir: installDir.value,
       targetPlatform: version.platform,
+      enableUpdates: false,
     });
     cancel();
   } catch (error) {