Correctly throw when DateTimeFormat receives a NaN timestamp

[jedel1043]

Test test/intl402/DateTimeFormat/prototype/format/throws-value-non-finite.js was panicking when running the test suite in debug mode. This PR fixes the panic.

[github-actions]

Test262 conformance changes

Test result	main count	PR count	difference
Total	52,598	52,598	0
Passed	49,421	49,421	0
Ignored	2,134	2,134	0
Failed	1,043	1,043	0
Panics	0	0	0
Conformance	93.96%	93.96%	0.00%

[codecov]

Codecov Report

❌ Patch coverage is 66.66667% with 1 line in your changes missing coverage. Please review.
✅ Project coverage is 56.54%. Comparing base (6ddc2b4) to head (370b239).
⚠️ Report is 633 commits behind head on main.

Files with missing lines	Patch %	Lines
...e/engine/src/builtins/intl/date_time_format/mod.rs	66.66%	1 Missing ⚠️

Additional details and impacted files

@@            Coverage Diff             @@
##             main    #4588      +/-   ##
==========================================
+ Coverage   47.24%   56.54%   +9.29%     
==========================================
  Files         476      547      +71     
  Lines       46892    60058   +13166     
==========================================
+ Hits        22154    33957   +11803     
- Misses      24738    26101    +1363     

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