Federation page improvements for dark mode and last_entry without a date

This is almost a copy of Awesome-Technologies/synapse-admin#583 PR
authored by @rkfg

src/resources/destinations.tsx

@@ -27,14 +27,19 @@ import {
   useNotify,
   useRefresh,
   useTranslate,
+  DateFieldProps,
 } from "react-admin";
 
 import { DATE_FORMAT } from "../components/date";
+import { get } from "lodash";
 
 const DestinationPagination = () => <Pagination rowsPerPageOptions={[10, 25, 50, 100, 500, 1000]} />;
 
 const destinationRowSx = (record: RaRecord) => ({
-  backgroundColor: record.retry_last_ts > 0 ? "#ffcccc" : "white",
+  backgroundColor: record.retry_last_ts > 0 ? "warning.light" : "primary.contrastText",
+  "& .MuiButtonBase-root": {
+    color: "primary.dark",
+  },
 });
 
 const destinationFilters = [<SearchInput source="destination" alwaysOn />];
@@ -92,6 +97,14 @@ const DestinationTitle = () => {
   );
 };
 
+const RetryDateField = (props: DateFieldProps) => {
+  const record = useRecordContext(props);
+  if (props.source && get(record, props.source) === 0) {
+    return <DateField {...props} record={{ ...record, [props.source]: null }} />;
+  }
+  return <DateField {...props} />;
+};
+
 export const DestinationList = (props: ListProps) => {
   return (
     <List
@@ -103,7 +116,7 @@ export const DestinationList = (props: ListProps) => {
       <Datagrid rowSx={destinationRowSx} rowClick={id => `${id}/show/rooms`} bulkActionButtons={false}>
         <TextField source="destination" />
         <DateField source="failure_ts" showTime options={DATE_FORMAT} />
-        <DateField source="retry_last_ts" showTime options={DATE_FORMAT} />
+        <RetryDateField source="retry_last_ts" showTime options={DATE_FORMAT} />
         <TextField source="retry_interval" />
         <TextField source="last_successful_stream_ordering" />
         <DestinationReconnectButton />