feat(SideNavMenu): add title tooltip (#12321)

Co-authored-by: kodiakhq[bot] <49736102+kodiakhq[bot]@users.noreply.github.com>

Author: emyarod

packages/react/src/components/UIShell/SideNavMenu.js

@@ -66,7 +66,9 @@ const SideNavMenu = React.forwardRef(function SideNavMenu(props, ref) {
             <IconElement />
           </SideNavIcon>
         )}
-        <span className={`${prefix}--side-nav__submenu-title`}>{title}</span>
+        <span className={`${prefix}--side-nav__submenu-title`} title={title}>
+          {title}
+        </span>
         <SideNavIcon className={`${prefix}--side-nav__submenu-chevron`} small>
           <ChevronDown size={20} />
         </SideNavIcon>