Fixes #5146: Apply maxReadFileLine limit to Excel files

[roomote]

• Modified extractTextFromXLSX to accept maxRows option
• Updated extractTextFromFile to pass row limit to Excel extraction
• Modified readFileTool to apply maxReadFileLine setting to Excel files
• Added comprehensive tests for row limiting functionality
• Excel files now respect the same line limits as regular text files
• Prevents 'input length too long' errors when reading large Excel files

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Important

Apply row limit to Excel file processing in readFileTool and extractTextFromXLSX, with tests for row limiting functionality.

• Behavior:
  • extractTextFromXLSX in extract-text-from-xlsx.ts now accepts maxRows option to limit rows processed.
  • readFileTool in readFileTool.ts applies maxReadFileLine to Excel files, truncating content if limit is exceeded.
  • Excel files now show truncation notice if row limit is applied.
• Tests:
  • Added tests in extract-text-from-xlsx.test.ts for row limiting, including multiple sheets and empty rows.
• Misc:
  • Renamed ROW_LIMIT to DEFAULT_ROW_LIMIT in extract-text-from-xlsx.ts.
  • Updated extractTextFromFile in extract-text.ts to pass maxRows to Excel extraction.

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[delve-auditor]

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