Small cleanup for Events and Timelines (#20731)

* change paleozoic to mesozoic for accuracy

* switch kebab icons to ellipses

frontend/src/metabase/timelines/components/EventList/EventList.tsx

@@ -44,7 +44,7 @@ const EventList = ({
         </ListThreadContainer>
         <ListIconContainer>
           <ListIcon name="dyno" />
-          <ListIconText>{t`The Paleozoic Era`}</ListIconText>
+          <ListIconText>{t`The Mesozoic era`}</ListIconText>
         </ListIconContainer>
       </ListFooter>
     </div>

frontend/src/metabase/timelines/components/TimelineDetailsModal/TimelineDetailsModal.tsx

@@ -59,7 +59,7 @@ const TimelineDetailsModal = ({
   return (
     <ModalRoot>
       <ModalHeader title={title} onClose={onClose}>
-        {!isArchive && <EntityMenu items={menuItems} triggerIcon="kebab" />}
+        {!isArchive && <EntityMenu items={menuItems} triggerIcon="ellipsis" />}
       </ModalHeader>
       {(isNotEmpty || isSearching) && (
         <ModalToolbar>

frontend/src/metabase/timelines/components/TimelineListModal/TimelineListModal.tsx

@@ -75,7 +75,7 @@ const TimelineMenu = ({ collection }: TimelineMenuProps): JSX.Element => {
     [collection],
   );
 
-  return <EntityMenu items={items} triggerIcon="kebab" />;
+  return <EntityMenu items={items} triggerIcon="ellipsis" />;
 };
 
 export default TimelineListModal;