fix tests

Author: artemmufazalov

src/components/SyntaxHighlighter/YDBSyntaxHighlighter.scss

@@ -1,12 +1,10 @@
 @use '../../styles/mixins.scss';
 
 .ydb-syntax-highlighter {
-    &__wrapper {
-        position: relative;
-        z-index: 0;
+    position: relative;
+    z-index: 0;
 
-        height: 100%;
-    }
+    height: 100%;
 
     &__sticky-container {
         z-index: 1;

src/components/SyntaxHighlighter/YDBSyntaxHighlighter.tsx

@@ -70,7 +70,7 @@ export function YDBSyntaxHighlighter({
     };
 
     return (
-        <div className={b('wrapper', className)}>
+        <div className={b(null, className)}>
             {renderCopyButton()}
 
             <ReactSyntaxHighlighter