Convert span-less errors to spanned errors

[sophiajt]

We're due a good pass over the code to remove most of the string errors and replace them with errors that point to spans (including possibly origin spans).

This is a placeholder, but should be replaced with the locations of the remaining span-less errors.

[sophiajt]

This is basically going through and looking at each of the ShellError::untagged_runtime_error and trying to replace the ones we can with ShellError::labeled_error, if possible.

[humancalico]

Hey! @jonathandturner Can I take this issue?

[sophiajt]

@akshat2654 - please do! You don't need to do them all at once. You can file a PR with batches of fixes, if you like.

[Falcz]

Looks like this issue is outdated as of #728 - ShellError::string has been replaced with ShellError::untagged_runtime_error

[sophiajt]

Thanks, I'll update

[coderkalyan]

Hi! @jonathandturner is there still stuff to do, that I can work on here? If so, I'd like to help, I'll probably do it one at a time since I'm new to the codebase

[sophiajt]

Looks like almost all of these that can be converted have been converted.

Closing this, but we should keep a watch for any that we missed.