rebase intl spec onto the current ecma402 master

[ryzokuken]

• dateStyle/timeStyle
• fractionalSecondDigits
• dayPeriod
• other misc changes

Refs: #1244

[codecov]

Codecov Report

Merging #1345 (a2661bd) into main (a6c2525) will decrease coverage by 0.01%.
The diff coverage is 75.00%.

@@            Coverage Diff             @@
##             main    #1345      +/-   ##
==========================================
- Coverage   95.08%   95.06%   -0.02%     
==========================================
  Files          19       19              
  Lines        9692     9695       +3     
  Branches     1525     1526       +1     
==========================================
+ Hits         9216     9217       +1     
- Misses        468      470       +2     
  Partials        8        8              

Flag	Coverage Δ
test262	54.30% <40.00%> (-0.03%)	⬇️
tests	90.82% <58.33%> (-0.03%)	⬇️

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Impacted Files	Coverage Δ
polyfill/lib/calendar.mjs	89.04% <72.72%> (-0.30%)	⬇️
polyfill/lib/ecmascript.mjs	95.87% <100.00%> (ø)

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[ryzokuken]

Ready for review, please take a look.