[Closes #16460] Fix .pagination-sm line height

[Closes #16460] Fix .pagination-sm line height by adding `@line-height-small` to `.pagingation-sm`.

less/mixins/pagination.less

 // Pagination
 
-.pagination-size(@padding-vertical; @padding-horizontal; @font-size; @border-radius) {
+.pagination-size(@padding-vertical; @padding-horizontal; @font-size; @line-height; @border-radius) {
   > li {
     > a,
     > span {
       padding: @padding-vertical @padding-horizontal;
       font-size: @font-size;
+      line-height: @line-height;
     }
     &:first-child {
       > a,

less/pagination.less

@@ -80,10 +80,10 @@
 
 // Large
 .pagination-lg {
-  .pagination-size(@padding-large-vertical; @padding-large-horizontal; @font-size-large; @border-radius-large);
+  .pagination-size(@padding-large-vertical; @padding-large-horizontal; @font-size-large; @line-height-large; @border-radius-large);
 }
 
 // Small
 .pagination-sm {
-  .pagination-size(@padding-small-vertical; @padding-small-horizontal; @font-size-small; @border-radius-small);
+  .pagination-size(@padding-small-vertical; @padding-small-horizontal; @font-size-small; @line-height-small; @border-radius-small);
 }