Add context to "attending" string

[nilovelez]

Describe the bug

Need to differentiate between the "Attending" string by the RSVP button (you are attending) and the title of the attendee list (these people are attending).

If Spanish those have to have different translations, and probably the same will happen in other locales

Steps to Reproduce

Check the single event page when at least you are attending the event. Screenshot attached.

Screenshots, screen recording, code snippet

Environment information

No response

WordPress information

No response

Code of Conduct

• I agree to follow this project's Code of Conduct

[mauteri]

@nilovelez can you confirm this has been done and that I'm not misunderstanding?

https://github.com/GatherPress/gatherpress/blob/main/src/components/RsvpResponse.js#L36
https://github.com/GatherPress/gatherpress/blob/main/src/components/RsvpStatusResponse.js#L26

Thanks! (cc @patriciabt @carstingaxion)

[mauteri]

I'm going to review and standardize string context here and other areas of the plugin.