duckdb: forbid pushdown of list_col in (item, NULL)

[myrrc]

list_col in (item, NULL) returns NULL on non-match. list_contains returns false.
Also support TIME_NS literals.

[codspeed-hq]

Merging this PR will degrade performance by 10.75%

❌ 2 regressed benchmarks
✅ 1899 untouched benchmarks
⏩ 43 skipped benchmarks¹

Warning

Please fix the performance issues or acknowledge them on CodSpeed.

Performance Changes

	Mode	Benchmark	BASE	HEAD	Efficiency
❌	Simulation	decompress[u64, (1000, 16)]	64.6 µs	72.4 µs	-10.84%
❌	Simulation	compress_fsst[(1000, 64, 8)]	1 ms	1.2 ms	-10.65%

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 myrrc/duckdb-time-ns (db2b879) with develop (0053f78)}

Footnotes

1. 43 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. ↩

[robert3005]

Can we instead rewrite the expression to check if values contain null?