fix: move presence menu to leftmost position in navbar

This is done because the number of people present changes over time, causing
occasional "jumping" when people enter/exit. With the changelog/warning button
to the left of the presence menu, you can end up in situations where you click
on the wrong thing by accident, since the layout shifts. It also causes less
of a layout shift on update.

packages/sanity/src/studio/components/navbar/Navbar.tsx

@@ -279,6 +279,10 @@ export function Navbar(props: NavbarProps) {
           {shouldRender.brandingCenter && <Box marginX={1}>{brandingComponent}</Box>}
 
           <Flex align="center">
+            <Box marginRight={1}>
+              <PresenceMenu collapse={shouldRender.collapsedPresenceMenu} />
+            </Box>
+
             {shouldRender.changelog && (
               <Box marginRight={1}>
                 <ChangelogButton />
@@ -291,10 +295,6 @@ export function Navbar(props: NavbarProps) {
               </Box>
             )}
 
-            <Box marginRight={1}>
-              <PresenceMenu collapse={shouldRender.collapsedPresenceMenu} />
-            </Box>
-
             {shouldRender.tools && (
               <Box>
                 <UserMenu />