[format] Support size based ORC memory protection for large rows

[ArnavBalyan]

Purpose

• ORC checks memory growth after a x number of rows. When row size is large, this allowing stripe memory to grow far beyond the configured size before hitting the row count.
• Add memory based check which can detect memory growth even when the row count is low.
• This is helpful when rows contain large amount of data like embeddings, vectors etc.

Tests

• UT

[JingsongLi]

[P2] Honor sub-1 stripe-size ratios

This new gate says a stripe is checked once estimateMemory() exceeds ratio * orc.stripe.size, but the unchanged flush condition below still compares only with memoryLimit (normally the full stripe size). For example, with ratio 0.5 and an unscaled writer, this branch starts firing at half a stripe, resets rowsSinceCheck on every subsequent batch, yet does not flush until the estimate exceeds the full stripe size. That both violates the option description and adds an estimate on every batch in between. Please either flush against the configured threshold (while still respecting a lower MemoryManager limit), or reject/document ratios below 1 if they are not supported.