Auto merge of #13422 - SecurityInsanity:master, r=KiChjang

Make Assign throw error on invalid url

Step 2 of: https://html.spec.whatwg.org/multipage/browsers.html#dom-location-assign says we should throw an error. This makes it do that.

---
- [x] `./mach build -d` does not report any errors
- [x] `./mach test-tidy` does not report any errors
- [x] These changes fix #13420  (github issue number if applicable).
- [x] There are tests for these changes

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tests/wpt/metadata/html/browsers/history/the-location-interface/location_assign.html.ini

@@ -2,7 +2,3 @@
   type: testharness
   [location assign]
     expected: FAIL
-
-  [URL that fails to parse]
-    expected: FAIL
-