Polyfill: Fix two tests related to date/time formatting

[catamorphism]

1. Remove 'timeZoneName' from hasAnyDateTimeOptions. This matches the spec ( https://tc39.es/proposal-temporal/#sec-getdatetimeformat step 14).
2. Add a case to timeAmend to throw an exception for the 'dateStyle' option. This matches the spec
   ( https://tc39.es/proposal-temporal/#sec-createdatetimeformat step 45c).

This allows the following tests to pass:

• intl402/DateTimeFormat/prototype/{format, formatToParts, formatRange, formatRangeToParts}/temporal-plaindatetime-unsupported-options.js
• intl402/Temporal/PlainTime/prototype/toLocaleString/datestyle-and-timestyle.js

[ptomato]

I dug into this a bit today and found that it requires a bit more refactoring.

You can see in the CI log that intl402/DateTimeFormat/prototype/format/temporal-plaintime-formatting-datetime-style.js unexpectedly fails here. I initially thought this test was incorrect, but by my reading of the spec it is actually correct — dateStyle and timeStyle together should throw when passed to the toLocaleString method of PlainDate, PlainTime, PlainYearMonth, or PlainMonthDay, but should be accepted in the Intl.DateTimeFormat constructor.

I've kind of half-done the refactoring already while trying to figure out what was going on. Let me know if you want to go over it together so you can take it over to finish this PR, or alternatively I can clean up what I have and push it to this PR.

Either way, we'll also need to update the pinned test262 commit to include Anba's modifications to the tests.

[ptomato]

tc39/test262#4880 should add more test coverage relevant to this.

Comments addressed

[ptomato]

OK, I cleaned up my half-done refactor and pushed it to this branch. I'd appreciate if someone else besides me could take a look at it.

[codecov]

Codecov Report

✅ All modified and coverable lines are covered by tests.
✅ Project coverage is 97.89%. Comparing base (9291822) to head (77c14d3).
⚠️ Report is 3 commits behind head on main.

Additional details and impacted files

@@            Coverage Diff             @@
##             main    #3256      +/-   ##
==========================================
- Coverage   97.91%   97.89%   -0.03%     
==========================================
  Files          22       22              
  Lines       10367    10405      +38     
  Branches     1805     1819      +14     
==========================================
+ Hits        10151    10186      +35     
- Misses        197      200       +3     
  Partials       19       19              

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