Thanks to mhowell for the STRIP_ANCHOR function in the Fluent migration.
We were using the "for" attribute on a XUL label which does not behave
like an HTML label. This prevented the programmatic association
between the checkbox and the label. By utilizing moz-label, we maintain
the accesskey behavior of the previous XUL label.
Additionally we use moz-support-link to remove the
"collection-backlogged-crash-reports-link" Fluent string.
Differential Revision: https://phabricator.services.mozilla.com/D204557