fix(client): make long result cells readable without unbounded rows

[openai0229]

Summary

Rework the merged #2752 result-cell fix so ordinary long SQL/DDL values remain complete without allowing one row to grow without bound.

Root cause

The previous PR only enabled VTable auto wrapping and auto row height. VTable still applied its default maxCharactersNumber = 200 before measuring or rendering text, so the row expanded around an already-truncated value. defaultRowHeight: 'auto' was also redundant once heightMode: 'autoHeight' is enabled.

Changes

• Keep autoWrapText and heightMode: 'autoHeight' scoped to ResultSetTable.
• Set maxCharactersNumber to Number.MAX_SAFE_INTEGER so ordinary result text is not truncated by VTable. Existing largeValue metadata rendering and chunked value viewing are unchanged.
• Cap automatically calculated body rows at 240px after VTable rendering. Rows recorded by VTable as manually resized are left untouched, so dragging a row boundary reveals more content.
• Replace the previous layout-only regression assertion with coverage for the effective layout contract and automatic/manual row-height behavior.

Verification

• yarn test:result-table-layout
• yarn test:result-set-ui (35/35)
• Targeted ESLint with --max-warnings=0
• Community production Webpack compilation
• git diff --check