use article title for email subject when sharing article via iOS share sheet

[edjusted]

If I share an article from Omnivore in iOS, I tap on Mail, and a new email is created with the article title and url pre-populated in the body of the email and a blank subject. I'd like to see the article title in the subject of the email.

[jacksonh]

Just looking at some docs, seems this is a bigger change that expected:

When you use navigator.share() on iOS, you can specify the title, text, and URL, but the ability to explicitly set the email subject or other email-specific fields directly through the API is not supported. This limitation exists because navigator.share() aims to provide a general interface for sharing across various apps, without app-specific customizations like email subjects.

I'll have to switch over to handling this natively.