fix: preview files containing special \x1b characters as plain text and escape

yazi-plugin/src/external/highlighter.rs

@@ -84,6 +84,8 @@ impl Highlighter {
 				buf.push(b'\n');
 			}
 
+			buf.iter_mut().filter(|&&mut b| b == b'\x1b').for_each(|b| *b = b'^');
+
 			if i > skip {
 				after.push(String::from_utf8_lossy(&buf).into_owned());
 			} else if !plain {