Fix typo in wrapRegExp helper (#9726)

packages/babel-helpers/src/helpers.js

@@ -1870,7 +1870,7 @@ helpers.wrapRegExp = helper("7.2.6")`
       // but in that case Babel doesn't add the wrapper anyway.
 
       var g = _groups.get(re);
-      return Object.keys(groups).reduce(function(groups, name) {
+      return Object.keys(g).reduce(function(groups, name) {
         groups[name] = result[g[name]];
         return groups;
       }, Object.create(null));

packages/babel-plugin-transform-named-capturing-groups-regex/test/fixtures/runtime/issue-9722.js

@@ -0,0 +1,10 @@
+const regex1 = /(?<alpha>\w+):(?<bravo>\d+)/;
+const regex2 = /(?<alpha>\w+):(?<bravo>[a-z]+):(?<charlie>\w+)/;
+
+const result = regex2.exec("foo:abc:bar");
+
+expect(result.groups).toEqual({
+  alpha: "foo",
+  bravo: "abc",
+  charlie: "bar",
+});