Use exact prop consistently

[waxlamp]

Closes #792

Reviewers, please especially look at f4790be and tell me if that exact is actually supposed to be there in some other capacity (it has no corresponding :to, and doesn't look like it's supposed to).

[mvandenburgh]

LGTM

Reviewers, please especially look at f4790be and tell me if that exact is actually supposed to be there in some other capacity (it has no corresponding :to, and doesn't look like it's supposed to).

I looks like it was placed there erroneously. The v-list-item-content docs make no mention of an exact prop.
https://vuetifyjs.com/en/api/v-list-item-content/

[brianhelba]

I haven't looked at this comprehensively to be sure that all the appropriate places were covered, but the changes here seem reasonable.

There is a legitimate use case for to without exact, where nested pages should cause a top-level link to me marked as active. I don't know if that applies to any of these changes.

[dandibot]

🚀 PR was released in v0.2.51 🚀