Template sweep -- fix bugs in Vue and Lit

[pdaoust]

I don't claim this is a thorough sweep that catches all bugs, but it does catch all bugs discovered via following the Getting Started Guide but choosing Lit and Vue instead of Svelte for the templating engine.

[ThetaSinner]

@pdaoust Same with this one, please can it target develop? Then would you be willing to go through and comment on the PR with a description of what is being changed/fixed so I can do some testing?

I'm happy reviewing the code but I don't know the repo well enough to understand what's changing without having a conversation about it if that's okay! :)

[ThetaSinner]

This is now ready for review and can be merged when ready

[c12i]

Discovered similar bugs, at least for the Vue and Svelte templates hence why I am returning to this PR, I think we should be getting this PR merged as it does address some critical issues

@pdaoust kindly let me know if you are in a position to resolve the merge conflicts

[c12i]

@pdaoust, allow me to close this PR since it is stale at the moment and most of the changes made here have long been addressed

[pdaoust]

Sure @c12i . Are there any fixes that haven't already been made? Should I do a new PR with those?

[c12i]

Thanks @pdaoust, I don't think there are any changes at the moment, I inadvertently addressed them while transitioning the templates to the new styling.