https://github.com/tc39/proposal-temporal/issues/1753 records the
consensus reached at the October 2021 TC39 meeting to disallow "-000000"
as an extended year, both in Date.parse and Temporal. This adds tests for
the Temporal part of that.
https://github.com/tc39/proposal-temporal/pull/1893 was a bug that caused
the 'offset' property to be ignored in ZonedDateTime property bags. Add
tests that ensure it is not ignored.
This was a normative change that achieved consensus at the October 2021
TC39 meeting.
This requires a few adjustments of time zone names and offsets in some
places. The only named time zone that is required to be supported by an
implementation not supporting ECMA-402 is "UTC".
Unfortunately, in #3304 I made a last-minute mistake when I added the
uncallable value to the assertion message, and neglected to test it;
Symbols can't be converted to strings like that, so these tests would
fail. This fixes the assertion messages.
Tests for the normative changes made to Temporal in
https://github.com/tc39/proposal-temporal/pull/1829
In a previous version of the specification, there was a fallback to the
intrinsic getOffsetNanosecondsFor when it was undefined.
