Use a separate class to remove the footer space in the query editor,

when no of records in a page is set to 0 (or, less than 0). So that -
we do not loose CSS applied on the children DOM Elements dependent of
the original class.

This was regression of commit-id:
f9393aee44

We were loosing the formatting under the grid table due to this change.

web/pgadmin/tools/sqleditor/static/css/sqleditor.css

@@ -58,6 +58,10 @@
   overflow: auto;
 }
 
+.sql-editor-grid-container.has-no-footer {
+  height: 100%;
+}
+
 #datagrid-paginator {
   bottom: 0px;
   width: 100%;
@@ -289,4 +293,4 @@ li.CodeMirror-hint-active {
 
 .CodeMirror-hint .fa::before {
   padding-right: 7px;
-}
+}