Replace IValueArrowCodec with switch-based dispatch (#48003)HEADmain

This partially reverts #46374 for performance reasons - IValueArrowCodec is replaced with switch on value to avoid virtual calls that do not inline on hot path. Also removed virtual builder->type() calls in VERIFY.

TEncoding*Builder classes retained - they provide code deduplication between compression and insertion at the cost of switch dispatch on each value instead of per-column on insertion path - this cost is below noise level on benchmarks.

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