parser: port test "nosuspend block"

Implement nosuspend statement in expectStatement.

Co-Authored-By: Claude Opus 4.6 (1M context) <noreply@anthropic.com>

parser.c

@@ -1912,6 +1912,15 @@ static AstNodeIndex expectStatement(Parser* p, bool allow_defer_var) {
             });
     }
     case TOKEN_KEYWORD_NOSUSPEND:
+        return addNode(&p->nodes,
+            (AstNodeItem) {
+                .tag = AST_NODE_NOSUSPEND,
+                .main_token = nextToken(p),
+                .data = {
+                    .lhs = expectBlockExprStatement(p),
+                    .rhs = 0,
+                },
+            });
     case TOKEN_KEYWORD_SUSPEND:
     case TOKEN_KEYWORD_ENUM:
     case TOKEN_KEYWORD_STRUCT:

parser_test.zig

@@ -1799,6 +1799,17 @@ test "zig fmt: if-else with comment before else" {
     );
 }
 
+test "zig fmt: nosuspend block" {
+    try testCanonical(
+        \\pub fn main() anyerror!void {
+        \\    nosuspend {
+        \\        var foo: Foo = .{ .bar = 42 };
+        \\    }
+        \\}
+        \\
+    );
+}
+
 test "zig fmt: top-level tuple function call type" {
     try testCanonical(
         \\foo()