CalendarMonthDayToISOReferenceDate: Require "eraYear + year" and "month + monthCode" to be consistent?

[anba]

It'd be good to have more detailed information when built-in calendars need to check for consistent inputs:

// Which of these are errors?

// eraYear and year inconsistent when month is present.
Temporal.PlainMonthDay.from({calendar: "gregory", era: "ce", eraYear: 2023, year: 2022, month: 2, day: 30});

// eraYear and year inconsistent when monthCode is present.
Temporal.PlainMonthDay.from({calendar: "gregory", era: "ce", eraYear: 2023, year: 2022, monthCode: "M02", day: 30});

// month and monthCode inconsistent.
Temporal.PlainMonthDay.from({calendar: "gregory", month: 03, monthCode: "M02", day: 30});

[justingrant]

Meeting 2024-05-30: @gibson042 will PR a change to align behavior of non-ISO calendars to match behavior of ISO calendar, which would throw if month/monthCode or year/era/eraYear are present but inconsistent.