Description:
If a user opens an .xlsx spreadsheet originating from MS Excel which has only a few rows and removes some of them, then saves the result as .xlsx,
 <row r="1048576" ...>
will be created in xl/worksheets/sheet1.xml and the updated <dimension> tag will reflect this, e. g.: <dimension ref="A1:D1048576"/>

The unexpectedly created <row r="1048576" ...> will be empty and invisible in the UI. However, this drives crazy simple programs, processing the spreadsheet row by row and column by column. They try to process 1048576 rows from 1 to 1048576 which takes eternity.

Steps to Reproduce:
1. Create a new spreadsheet in MS Excel 365.
2. In row 1, enter "Hello" in cell A1, "world" in cell B2. In row 2, enter "Mum" in A2, "loves" in B2, "ice" in C2, "cream" in D2. Exact strings do not matter.
3. Save as excel.xlsx (default MS Excel XLSX format)
3. Open excel.xlsx in LibreOffice Calc
4. context menu on row 1 (right mouse click row 1) -> click "Delete rows".
5. Save as localc.xlsx 
6. Look at xl/worksheets/sheet1.xml inside localc.xlsx

Actual Results:
  <dimension ref="A1:D1048576"/>
  ...
  <sheetData>
    <row r="1" customFormat="false" ht="15" hidden="false" customHeight="false" outlineLevel="0" collapsed="false">
       ...
    </row>
    <row r="1048576" customFormat="false" ht="12.8" hidden="false" customHeight="false" outlineLevel="0" collapsed="false"/>
  </sheetData>
  ...

Expected Results:
  <dimension ref="A1:D1"/>
  ...
  <sheetData>
    <row r="1" customFormat="false" ht="15" hidden="false" customHeight="false" outlineLevel="0" collapsed="false">
       ...
    </row>
  </sheetData>
  ...



Reproducible: Always


User Profile Reset: No

Additional Info:
LibreOffice Calc version:
   Version: 25.8.3.2 (X86_64)
   Build ID: 8ca8d55c161d602844f5428fa4b58097424e324e
   CPU threads: 20; OS: Windows 11 X86_64 (build 26100); UI render: Skia/Raster; VCL: win
   Locale: en-US (en_US); UI: en-US
   Calc: threaded

MS Excel version:
Microsoft® Excel® for Microsoft 365 MSO (Version 2510 Build 16.0.19328.20266) 64-bit

To quickly look at the XML inside the localc.xlsx, I used the following console command under Linux:
unzip -p localc.xlsx xl/worksheets/sheet1.xml | xmllint --pretty 1 /dev/stdin