PaddleOCR-VL renders tables as HTML with per-cell text-align styles.
These waste tokens on layout markup and bypass the chunker's
table-protection logic (which only recognizes Markdown pipe tables),
causing large tables to be split mid-row.
Convert inline HTML <table> blocks to GFM Markdown tables when possible,
and strip presentational attributes (style/class/align/...) for tables
using rowspan/colspan that Markdown cannot express.
Refs: https://github.com/Tencent/WeKnora/issues/1725
wizardchen