These tests cover the normative change approved in the July 2025 TC39
plenary. See https://github.com/tc39/proposal-temporal/pull/3130.
All properties of user-passed options objects should be read and cast
before any "algorithmic validation" is done.
This is a lot of tests, that cover every entry point where an options
object is passed in, where subsequently an exception can be thrown or user
code can be called.
However, the normative change only affects 10 of these tests:
- Instant.p.since,until,toString
- PlainDate.p.since,until
- PlainTime.p.since,until
- PlainYearMonth.p.since,until
- ZonedDateTime.p.toString
The other 35 tests simply close a gap in coverage.
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