Perform validation and null view replacement in two passes

[robert3005]

When validating VarBinViewArray first validate the buffers and inline strings
and only later iterate nulls and replace them with sentinel values

[codspeed]

Merging this PR will regress 3 benchmarks

⚠️ Unknown Walltime execution environment detected

Using the Walltime instrument on standard Hosted Runners will lead to inconsistent data.

For the most accurate results, we recommend using CodSpeed Macro Runners: bare-metal machines fine-tuned for performance measurement consistency.

⚠️ Different runtime environments detected

Some benchmarks with significant performance changes were compared across different runtime environments,
which may affect the accuracy of the results.

Open the report in CodSpeed to investigate

⚡ 4 improved benchmarks
❌ 3 regressed benchmarks
✅ 2055 untouched benchmarks
⏩ 503 skipped benchmarks¹

Warning

Please fix the performance issues or acknowledge them on CodSpeed.

Performance Changes

	Mode	Benchmark	BASE	HEAD	Efficiency
❌	WallTime	mul_u64_nonnull_neon	29.6 µs	39.7 µs	-25.46%
❌	WallTime	multiply_shapes_neon[(32768, PerRowPerRow)]	33.3 µs	38.6 µs	-13.94%
❌	WallTime	mul_i64_nonnull_neon	33.5 µs	38.6 µs	-13.43%
⚡	Simulation	all_valid_exclusive[65536]	6.9 ms	3.9 ms	+73.92%
⚡	Simulation	all_valid_exclusive[4096]	438.3 µs	256.9 µs	+70.62%
⚡	WallTime	dict_canonicalize_gt_u8_neon[1000000]	547 µs	488 µs	+12.09%
⚡	WallTime	scalar_subtract_neon	13.9 µs	12.6 µs	+10.81%

Tip

Investigate this regression by commenting @codspeedbot fix this regression on this PR, or directly use the CodSpeed MCP with your agent.

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_{Comparing rk/validate (80d9731) with develop (a96e0a8)}

Footnotes

1. 503 benchmarks were skipped, so the baseline results were used instead. If they were deleted from the codebase, click here and archive them to remove them from the performance reports. ↩