fix: ensure that projects without optional chainer support can use @cypress/code-coverage

Author: ryanthemanuel

support.js

@@ -71,8 +71,11 @@ const registerHooks = () => {
       // because we don't control the cross-origin code, we can safely return
       let applicationSourceCoverage
       try {
-        applicationSourceCoverage = win?.__coverage__
+        if (win) {
+          applicationSourceCoverage = win.__coverage__
+        }
       } catch {}
+
       if (!applicationSourceCoverage) {
         return
       }