fix: SQL Lab vertical space (#12187)

(cherry picked from commit de61859e98d969c00b84fb04a2ae07d698cbbdc5)
diff --git a/superset-frontend/src/SqlLab/main.less b/superset-frontend/src/SqlLab/main.less
index 7123ed0..4e4eece 100644
--- a/superset-frontend/src/SqlLab/main.less
+++ b/superset-frontend/src/SqlLab/main.less
@@ -19,7 +19,7 @@
 @import '../../stylesheets/less/variables.less';
 
 body {
-  min-height: 500px; // Set a min height so the gutter is always visible when resizing
+  min-height: ~'max(100vh, 500px)'; // Set a min height so the gutter is always visible when resizing
   overflow: hidden;
 }