fix(upgrade): fix AngularJsUrlCodec to support Safari (#32959)

Safari throws an error when the new URL() constructor is called with an
undefined base. This change checks whether the base is undefined and
then calls the corresponding version of the URL constructor.

fix(upgrade): simplify solution by replacing undefined with ''

Co-Authored-By: Pete Bacon Darwin <pete@bacondarwin.com>

Simplify solution by replacing undefined with ''

Co-Authored-By: Pete Bacon Darwin <pete@bacondarwin.com>

fix(upgrade): Avoid passing an empty string as the base as well.

Browsers other than Safari may have issues with the empty string.

PR Close #32959

Author: Alison Gale

packages/common/upgrade/src/params.ts

@@ -198,7 +198,8 @@ export class AngularJSUrlCodec implements UrlCodec {
   // https://github.com/angular/angular.js/blob/864c7f0/src/ng/urlUtils.js#L60
   parse(url: string, base?: string) {
     try {
-      const parsed = new URL(url, base);
+      // Safari 12 throws an error when the URL constructor is called with an undefined base.
+      const parsed = !base ? new URL(url) : new URL(url, base);
       return {
         href: parsed.href,
         protocol: parsed.protocol ? parsed.protocol.replace(/:$/, '') : '',
@@ -335,4 +336,4 @@ function encodeUriQuery(val: string, pctEncodeSpaces: boolean = false) {
       .replace(/%2C/gi, ',')
       .replace(/%3B/gi, ';')
       .replace(/%20/g, (pctEncodeSpaces ? '%20' : '+'));
-}
+}