Revert "fix(EuiCode): Remove reducing two or more consecutive empty l…

…ines to a single one when using the Copy button"

This reverts commit 8a90215c81432514493b1bb29ecd314d6792a05d.

src/components/code/code_block_copy.tsx

@@ -28,8 +28,11 @@ export const useCopy = ({
   const [innerTextRef, _innerText] = useInnerText('');
   const innerText = useMemo(
     () =>
-      // Normalize line terminations to match native JS format
-      _innerText?.replace(NEW_LINE_REGEX_GLOBAL, '\n') || '',
+      _innerText
+        // Normalize line terminations to match native JS format
+        ?.replace(NEW_LINE_REGEX_GLOBAL, '\n')
+        // Reduce two or more consecutive new line characters to a single one
+        .replace(/\n{2,}/g, '\n') || '',
     [_innerText]
   );
   const textToCopy = isVirtualized ? `${children}` : innerText; // Virtualized code blocks do not have inner text