Merge branch 'pinned-nav-cookie-path' into 'master'

Set path for pinned nav cookie

## What does this MR do?

Sets a path for the pinned nav cookie so it will be present across page reload.

Closes #18836 

See merge request !4784

app/assets/javascripts/application.js.coffee

@@ -257,7 +257,7 @@ $ ->
 
   # Sidenav pinning
   if $(window).width() < 1440 and $.cookie('pin_nav') is 'true'
-    $.cookie('pin_nav', 'false')
+    $.cookie('pin_nav', 'false', { path: '/' })
     $('.page-with-sidebar')
       .toggleClass('page-sidebar-collapsed page-sidebar-expanded')
       .removeClass('page-sidebar-pinned')
@@ -271,7 +271,7 @@ $ ->
       $(this).toggleClass 'is-active'
 
       if $.cookie('pin_nav') is 'true'
-        $.cookie 'pin_nav', 'false'
+        $.cookie 'pin_nav', 'false', { path: '/' }
         $('.page-with-sidebar')
           .removeClass('page-sidebar-pinned')
           .toggleClass('page-sidebar-collapsed page-sidebar-expanded')
@@ -279,6 +279,6 @@ $ ->
           .removeClass('header-pinned-nav')
           .toggleClass('header-collapsed header-expanded')
       else
-        $.cookie 'pin_nav', 'true'
+        $.cookie 'pin_nav', 'true', { path: '/' }
         $('.page-with-sidebar').addClass('page-sidebar-pinned')
         $('.navbar-fixed-top').addClass('header-pinned-nav')