fix(cli): restore test summary output for tree-sitter test

Problem:
After commit f02d7e7e33
the `tree-sitter test` command no longer printed the final test summary,
leaving empty line. The `Stats` struct was embedded into `TestSummary`,
and the explicit call to print it was removed.

Solution:
Print `parse_stats` from `TestSummary.fmt()` implementation.

crates/cli/src/test.rs

@@ -595,6 +595,8 @@ impl std::fmt::Display for TestSummary {
             render_assertion_results("queries", &self.query_results)?;
         }
 
+        write!(f, "{}", self.parse_stats)?;
+
         Ok(())
     }
 }