back interdiff of round #7 and #6

appview: Update New PR Page #490

The compare forks option dropdown now shows repos in which you are a collaborator on instead of just repos you own.

files
appview
db
pages
templates
repo
pulls
ERROR
appview/db/repos.go

Failed to calculate interdiff for this file.

ERROR
appview/pages/templates/repo/pulls/fragments/pullCompareForks.html

Failed to calculate interdiff for this file.

ERROR
appview/pulls/pulls.go

Failed to calculate interdiff for this file.

NEW
appview/pages/templates/repo/pulls/fragments/pullHeader.html
···
{{ $icon = "git-merge" }}
{{ end }}
-
{{ $owner := resolve .Pull.OwnerDid }}
+
{{ $owner := resolve .Pull.PullSource.Repo.Did }}
<section class="mt-2">
<div class="flex items-center gap-2">
<div