feat(core): support RTL tables with w:bidiVisual alignment

[Pallavikumarimdb]

Summary

Closes: #734 by adding support for RTL tables containing <w:bidiVisual/>.

Changes

• Added bidi attribute to the table node attributes interface and ProseMirror schema.
• Implemented logic in toDOM to apply dir="rtl" and style direction: rtl to tables when bidi is true, ensuring correct visual rendering of columns.
• Updated mapping logic in toProseDoc and fromProseDoc to parse and serialize <w:bidiVisual/> to/from the document model.
• Added unit tests to cover parsing, rendering, and round-tripping of RTL tables.

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