fs: add Temporal.Instant support to Stats and BigIntStats

[LiviaMedeiros]

Refs: #57891

This is a very rough draft, and probably shouldn't land until Temporal implementation is finalized and/or enabled by default.
Opening early to see if there are any objections, suggestions to naming (the *Instant properties are facing userspace and having consistent convention would be nice), or to implementation.

[Renegade334]

Since Date.prototype.toInstant() comes along with Temporal, these are fairly trivial to obtain anyway? (Although come to think of it, this would lose nanosecond precision.)

It might be better to have this as a switchable option similar to bigint, rather than adding the overhead of building a load of Temporal objects for every stats call?

[LiviaMedeiros]

Since Date.prototype.toInstant() comes along with Temporal, these are fairly trivial to obtain anyway?

Converting from Date would have performance overhead on top of precision loss.

It might be better to have this as a switchable option similar to bigint, rather than adding the overhead of building a load of Temporal objects for every stats call?

These properties are lazy-loaded, so the overhead when not used should be minimal.

[codecov]

Codecov Report

❌ Patch coverage is 90.34483% with 14 lines in your changes missing coverage. Please review.
✅ Project coverage is 90.07%. Comparing base (a9b0a83) to head (4faf476).
⚠️ Report is 12 commits behind head on main.

Files with missing lines	Patch %	Lines
lib/internal/fs/utils.js	90.20%	14 Missing ⚠️

Additional details and impacted files

@@           Coverage Diff            @@
##             main   #60789    +/-   ##
========================================
  Coverage   90.06%   90.07%            
========================================
  Files         714      714            
  Lines      225629   225876   +247     
  Branches    42702    42742    +40     
========================================
+ Hits       203211   203448   +237     
+ Misses      14232    14205    -27     
- Partials     8186     8223    +37     

Files with missing lines	Coverage Δ
lib/internal/errors.js	97.65% <100.00%> (+<0.01%)	⬆️
lib/internal/fs/utils.js	98.43% <90.20%> (-1.25%)	⬇️

... and 68 files with indirect coverage changes

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[aduh95]

Suggested change

	globalThis,
	globalThis: {
	Temporal,
	},

[LiviaMedeiros]

Unfortunately this doesn't seem to work since at this point of bootstrapping Temporal is not defined yet.
Same goes for const { Temporal } = globalThis; on top level of the file.

[nodejs-github-bot]

CI: https://ci.nodejs.org/job/node-test-pull-request/73506/

[nodejs-github-bot]

CI: https://ci.nodejs.org/job/node-test-pull-request/73529/

[nodejs-github-bot]

CI: https://ci.nodejs.org/job/node-test-pull-request/73543/

[nodejs-github-bot]

Landed in 4ee7567