Fix broken test annotations for tests/source/issue-6202/long_pat.rs

1. The test annotations have the wrong syntax.
2. The test is missing a Rust language Edition (>= 2024) for if-let
   chains.

Detected in a subtree sync attempt.

Author: jieyouxu

tests/source/issue-6202/long_pat.rs

@@ -1,6 +1,7 @@
-// max_width = 120
-// error_on_line_overflow = true
-// style_edition = "2027"
+// rustfmt-max_width: 120
+// rustfmt-error_on_line_overflow: true
+// rustfmt-style_edition: 2027
+// rustfmt-edition: 2024
 
 impl EarlyLintPass for NeedlessContinue {
     fn check_expr(&mut self, cx: &EarlyContext<'_>, expr: &Expr) {
@@ -11,4 +12,4 @@ impl EarlyLintPass for NeedlessContinue {
             check_final_block_stmt(cx, body, label, expr.span.ctxt());
         }
     }
-}
+}

tests/target/issue-6202/long_pat.rs

@@ -1,6 +1,7 @@
-// max_width = 120
-// error_on_line_overflow = true
-// style_edition = "2027"
+// rustfmt-max_width: 120
+// rustfmt-error_on_line_overflow: true
+// rustfmt-style_edition: 2027
+// rustfmt-edition: 2024
 
 impl EarlyLintPass for NeedlessContinue {
     fn check_expr(&mut self, cx: &EarlyContext<'_>, expr: &Expr) {