test: add Number.toPrecision and operator edge case tests

[shruti2522]

It changes the following:

• fixed typo in LinearSpan doc comment (LinearPosition -> LinearSpan)
• Added toPrecision edge case tests for NaN, Infinity, -0, and carry over rounding
• Added tests for NaN comparisons, BigInt mixed type throwing behaviors, BigInt unsigned right shift (>>>) throws and instanceof with custom [Symbol.hasInstance]

[github-actions]

Test262 conformance changes

Test result	main count	PR count	difference
Total	52,963	52,963	0
Passed	49,902	49,901	-1
Ignored	2,222	2,222	0
Failed	839	840	+1
Panics	0	0	0
Conformance	94.22%	94.22%	-0.00%

Broken tests (1):

test/built-ins/Object/freeze/typedarray-backed-by-resizable-buffer.js (previously Passed)

Tested main commit: 8225dc5409d9b41eb4b8045c657122c9c28a503b
Tested PR commit: 6fc3b3ba0ee212b0b26ffdc7cb83451fe3185e42
Compare commits: 8225dc5...6fc3b3b

[jedel1043]

Thanks!

[codecov]

Codecov Report

✅ All modified and coverable lines are covered by tests.
✅ Project coverage is 58.59%. Comparing base (6ddc2b4) to head (6fc3b3b).
⚠️ Report is 814 commits behind head on main.

Additional details and impacted files

@@             Coverage Diff             @@
##             main    #4997       +/-   ##
===========================================
+ Coverage   47.24%   58.59%   +11.35%     
===========================================
  Files         476      559       +83     
  Lines       46892    61459    +14567     
===========================================
+ Hits        22154    36014    +13860     
- Misses      24738    25445      +707     

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