Updated Explore query styles to align them to other query editor to make them fit in better

public/sass/components/_slate_editor.scss

@@ -8,7 +8,8 @@
 .slate-query-field__wrapper {
   position: relative;
   display: inline-block;
-  padding: 6px 7px 4px;
+  padding: $input-padding-y $input-padding-x;
+  height: $gf-form-input-height;
   width: 100%;
   cursor: text;
   line-height: $line-height-base;