`strlen()` was used in Phabricator to check if a generic value is a non-empty string.
This behavior is deprecated since PHP 8.1. Phorge adopts `phutil_nonempty_string()` as
a general replacement.
In this specific case we use `phutil_nonempty_stringlike()` since we are not sure
if the variable `href` should be just a string or other objects.
In order not to leave these cases to chance, we have added a log line, which can be
removed in the future.
Note: this may highlight other absurd input values that might be worth correcting
instead of just ignoring. If phutil_nonempty_string() throws an exception in your
instance, report it to Phorge to evaluate and fix that specific corner case.
Closes T15303
Ref T15316