ENH get cached Member in SessionManagerField (#151)

calling ->Member on distinct object is never going to trigger ORM cache. Since the member is expected to be always the same, this leads to duplicate queries

Co-authored-by: Michal Kleiner <[email protected]>

src/FormFields/SessionManagerField.php

@@ -127,14 +127,16 @@ protected function getLoginSessions(Member $member)
             if (!$loginSession->canView()) {
                 continue;
             }
+
+
             $loginSessions[] = [
                 'ID' => $loginSession->ID,
                 'IPAddress' => $loginSession->IPAddress,
                 'UserAgent' => $loginSession->getFriendlyUserAgent(),
                 'IsCurrent' => $loginSession->isCurrent(),
                 'Persistent' => $loginSession->Persistent,
                 'Member' => [
-                    'Name' => $loginSession->Member()->Name
+                    'Name' => Member::get_by_id($loginSession->MemberID)->Name ?? ''
                 ],
                 'Created' => $this->addUtcOffset($loginSession->Created),
                 'LastAccessed' => $this->addUtcOffset($loginSession->LastAccessed),