Trim diff viewer of new lines

Author: jahooma

cli/src/components/tools/diff-viewer.tsx

@@ -50,7 +50,7 @@ const lineColor = (
 
 export const DiffViewer = ({ diffText }: DiffViewerProps) => {
   const theme = useTheme()
-  const lines = diffText.split('\n')
+  const lines = diffText.trim().split('\n')
 
   return (
     <box