Logic fix for UI elements (#7657)

- Check for false, as !true includes undefined
- Prevents visual flashes due to short term rendering of elements

src/frontend/src/components/modals/ServerInfoModal.tsx

@@ -91,7 +91,7 @@ export function ServerInfoModal({
               </OnlyStaff>
             </Table.Td>
           </Table.Tr>
-          {server.worker_running != true && (
+          {server?.worker_running == false && (
             <Table.Tr>
               <Table.Td>
                 <Trans>Background Worker</Trans>
@@ -103,7 +103,7 @@ export function ServerInfoModal({
               </Table.Td>
             </Table.Tr>
           )}
-          {server.email_configured != true && (
+          {server?.email_configured == false && (
             <Table.Tr>
               <Table.Td>
                 <Trans>Email Settings</Trans>

src/frontend/src/pages/Index/Settings/AdminCenter/TaskManagementPanel.tsx

@@ -49,7 +49,7 @@ export default function TaskManagementPanel() {
 
   return (
     <>
-      {!taskInfo.is_running && (
+      {taskInfo?.is_running == false && (
         <Alert title={t`Background Worker Not Running`} color="red">
           <Text>{t`The background task manager service is not running. Contact your system administrator.`}</Text>
         </Alert>