[Close #16482] Add border-radius to theme's navbar-inverse

[Close #16482] Add border-radius to theme's navbar-inverse

less/theme.less

@@ -145,7 +145,7 @@
 .navbar-inverse {
   #gradient > .vertical(@start-color: lighten(@navbar-inverse-bg, 10%); @end-color: @navbar-inverse-bg);
   .reset-filter(); // Remove gradient in IE<10 to fix bug where dropdowns don't get triggered; see https://github.com/twbs/bootstrap/issues/10257
-
+  border-radius: @navbar-border-radius;
   .navbar-nav > .open > a,
   .navbar-nav > .active > a {
     #gradient > .vertical(@start-color: @navbar-inverse-link-active-bg; @end-color: lighten(@navbar-inverse-link-active-bg, 2.5%));