duckdb: don't panic on unsupported Value type

[myrrc]

Now we return an error to the binder instead of panic!.

[codspeed-hq]

Merging this PR will not alter performance

✅ 44 untouched benchmarks
⏩ 1900 skipped benchmarks¹

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_{Comparing myrrc/duckdb-no-panic-on-value-convert (0376ca7) with develop (77e7bc2)²}

Footnotes

1. 1900 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. ↩

2. No successful run was found on develop (93058ba) during the generation of this report, so 77e7bc2 was used instead as the comparison base. There might be some changes unrelated to this pull request in this report. ↩