perf: Improve performance of normalize_nan

[andygrove]

Which issue does this PR close?

N/A

Rationale for this change

Avoid some allocations.

Scenario	Before	After	Speedup
No special values	20.2 µs	3.7 µs	5.4x
10% NaN	20.3 µs	3.7 µs	5.5x
10% neg zero	21.2 µs	3.7 µs	5.7x
10% null	22.0 µs	3.6 µs	6.1x
Mixed 10%	25.4 µs	3.8 µs	6.7x
All normal	20.3 µs	3.8 µs	5.3x

What changes are included in this PR?

How are these changes tested?

[codecov-commenter]

Codecov Report

✅ All modified and coverable lines are covered by tests.
✅ Project coverage is 59.58%. Comparing base (f09f8af) to head (d774b1a).
⚠️ Report is 803 commits behind head on main.

Additional details and impacted files

@@             Coverage Diff              @@
##               main    #2999      +/-   ##
============================================
+ Coverage     56.12%   59.58%   +3.46%     
- Complexity      976     1377     +401     
============================================
  Files           119      167      +48     
  Lines         11743    15493    +3750     
  Branches       2251     2569     +318     
============================================
+ Hits           6591     9232    +2641     
- Misses         4012     4962     +950     
- Partials       1140     1299     +159     

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[sqlbenchmark]

Comet TPC-H Benchmark Results

Commit: d774b1a - revert
Scale Factor: SF100
Iterations: 1

Query Times

Query	Time (s)	Query	Time (s)
Q1	10.67	Q12	7.19
Q2	5.85	Q13	6.85
Q3	9.56	Q14	3.65
Q4	11.25	Q15	7.19
Q5	18.62	Q16	4.49
Q6	2.61	Q17	31.91
Q7	11.82	Q18	33.28
Q8	24.43	Q19	6.90
Q9	37.54	Q20	6.58
Q10	10.44	Q21	45.59
Q11	4.36	Q22	4.93

Total Time: 305.71 seconds

---

Automated benchmark run by dfbench

[comphead]

👍 unary is fast but it requires the operation to be infallible and this is the case here.

[comphead]

Thanks @andygrove

[andygrove]

Thanks for the review @comphead