Make syntax-error-recovery filter more robust

Co-authored-by: Samuel Tardieu <[email protected]>

Author: notriddle

clippy_dev/src/fmt.rs

@@ -291,10 +291,11 @@ fn run_rustfmt(context: &FmtContext) -> Result<(), Error> {
             let entry = entry.expect("failed to find tests");
             let path = entry.path();
 
-            if path.extension() != Some("rs".as_ref())
                 || path
                     .components()
-                    .any(|component| component.as_os_str() == "syntax-error-recovery")
+                    .rev()
+                    .nth(1)
+                    .is_some_and(|c| c.as_os_str() == "syntax-error-recovery")
                 || entry.file_name() == "ice-3891.rs"
             {
                 None