lint: hoist hasBindingInScopeChain to module scope, add curly braces

Author: johanrd

lib/rules/template-no-obsolete-elements.js

@@ -29,6 +29,16 @@ const OBSOLETE = [
   'tt',
   'xmp',
 ];
+
+function hasBindingInScopeChain(scope, name) {
+  for (let s = scope; s; s = s.upper) {
+    if (s.set && s.set.has(name)) {
+      return true;
+    }
+  }
+  return false;
+}
+
 /** @type {import('eslint').Rule.RuleModule} */
 module.exports = {
   meta: {
@@ -52,13 +62,6 @@ module.exports = {
     const obsolete = new Set(OBSOLETE);
     const sourceCode = context.sourceCode;
 
-    function hasBindingInScopeChain(scope, name) {
-      for (let s = scope; s; s = s.upper) {
-        if (s.set && s.set.has(name)) return true;
-      }
-      return false;
-    }
-
     return {
       GlimmerElementNode(node) {
         if (!obsolete.has(node.tag)) {