[Share dashboards] Adding a related object to a shared dashboard should share it in the associated space if it does not exist

[nickpeihl]

When adding to a shared Dashboard a new panel that uses a different unshared data view, the Dashboard in the other space may fail to load the panel because it does not have that data view. So we will need to add a method during “Save” that checks for unshared related objects and either warns the user or automatically shares the related object.

[teresaalvarezsoler]

Thanks for raising this @nickpeihl, do we need another issue for adding a layer to a shared Lens viz or Map?

[nreese]

Closing, issue iceboxed in #188573