Position all popovers the same distance away from the trigger

src/components/ConfirmClear.svelte

@@ -18,7 +18,7 @@
   /* eslint-enable prefer-const */
 </script>
 
-<Popover popoverPositionRight="0" popoverPositionTop="3rem">
+<Popover popoverPositionRight="0" popoverPositionTop="2.5rem">
   {#snippet toggle(onclick)}
     <NakedButton stylePadding="0 4px" variant="ghost" {onclick}>
       <Icon name="broom-double" />

src/views/repo/Patch.svelte

@@ -643,7 +643,7 @@
               <Popover
                 bind:expanded={checkoutPopoverExpanded}
                 popoverPositionRight="0"
-                popoverPositionTop="3rem">
+                popoverPositionTop="2.5rem">
                 {#snippet toggle(onclick)}
                   <Button styleHeight="2rem" variant="secondary" {onclick}>
                     <Icon name="checkout" />Checkout<Icon name="chevron-down" />