chore: Migrate .less styles to Emotion (#22474)

superset-frontend/src/SqlLab/SqlLabGlobalStyles.tsx

@@ -0,0 +1,36 @@
+/**
+ * Licensed to the Apache Software Foundation (ASF) under one
+ * or more contributor license agreements.  See the NOTICE file
+ * distributed with this work for additional information
+ * regarding copyright ownership.  The ASF licenses this file
+ * to you under the Apache License, Version 2.0 (the
+ * "License"); you may not use this file except in compliance
+ * with the License.  You may obtain a copy of the License at
+ *
+ *   http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing,
+ * software distributed under the License is distributed on an
+ * "AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY
+ * KIND, either express or implied.  See the License for the
+ * specific language governing permissions and limitations
+ * under the License.
+ */
+
+import React from 'react';
+import { Global } from '@emotion/react';
+import { css } from '@superset-ui/core';
+
+export const SqlLabGlobalStyles = () => (
+  <Global
+    styles={theme => css`
+      body {
+        min-height: max(
+          100vh,
+          ${theme.gridUnit * 125}px
+        ); // Set a min height so the gutter is always visible when resizing
+        overflow: hidden;
+      }
+    `}
+  />
+);