link to default cost

frontend/src/metabase/reference/databases/FieldSidebar.jsx

@@ -32,9 +32,9 @@ const FieldSidebar =({
                              href={`/reference/databases/${database.id}/tables/${table.id}/fields/${field.id}`} 
                              icon="document" 
                              name="Details" />
-                <SidebarItem key={`/xray/field/${field.id}`} 
-                             href={`/xray/field/${field.id}`} 
-                             icon="document" 
+                <SidebarItem key={`/xray/field/${field.id}/approximate`}
+                             href={`/xray/field/${field.id}/approximate`}
+                             icon="document"
                              name="X-Ray this Field" />
         </ul>
     </div>

frontend/src/metabase/reference/databases/TableSidebar.jsx

@@ -39,9 +39,9 @@ const TableSidebar = ({
                          href={`/reference/databases/${database.id}/tables/${table.id}/questions`} 
                          icon="all" 
                          name="Questions about this table" />
-            <SidebarItem key={`/xray/table/${table.id}`} 
-                         href={`/xray/table/${table.id}`} 
-                         icon="all" 
+            <SidebarItem key={`/xray/table/${table.id}/approximate`}
+                         href={`/xray/table/${table.id}/approximate`}
+                         icon="all"
                          name="X-Ray this table" />
         </ol>
     </div>