MM-56583 - Updating settings css for only centre content scroll (#26064)

* MM-56583 - Updating settings css

* MM-56637 - Updating license modal padding

webapp/channels/src/components/admin_console/license_settings/modals/upload_license_modal.scss

@@ -12,6 +12,7 @@
 
     .modal-body {
         padding-top: 0 !important;
+        padding-bottom: 24px !important;
     }
 
     .content-body {

webapp/channels/src/sass/routes/_settings.scss

@@ -68,7 +68,8 @@
         }
 
         .modal-body {
-            min-height: calc(100% - 62px);
+            display: flex;
+            flex-direction: column;
             padding: 0;
             margin: 0 auto;
         }
@@ -187,16 +188,12 @@
         }
 
         .settings-table {
-            display: table;
+            display: flex;
             width: 100%;
             max-width: 1000px;
+            min-height: 0;
+            flex: 1;
             margin: 0 auto;
-            table-layout: fixed;
-
-            > div {
-                display: table-cell;
-                vertical-align: top;
-            }
 
             .security-links {
                 margin-right: 20px;
@@ -207,11 +204,14 @@
             }
 
             .settings-links {
+                overflow: auto;
                 width: 180px;
                 background: var(--sidebar-bg);
             }
 
             .settings-content {
+                overflow: auto;
+                flex: 1;
                 padding: 0 20px 30px;
 
                 .modal-header {