Fix Set-ExcelRow/Set-ExcelRange -Height affecting the next row (off-by-one)

[Copilot]

Set-ExcelRow -Height and Set-ExcelRange -Height were applying the specified height to one extra row beyond the target range due to an off-by-one error in the row iteration bounds.

Root cause

In Set-ExcelRange.ps1, the row range was computed as:

# Before: generates Rows+1 values (e.g. row 1 → iterates 1..2)
($Range.Start.Row)..($Range.Start.Row + $Range.Rows)

Fix

# After: generates exactly Rows values
($Range.Start.Row)..($Range.Start.Row + $Range.Rows - 1)

Set-ExcelRow delegates height setting to Set-ExcelRange, so both commands are fixed by this single change. All other formatting properties were unaffected as they operate directly on the ExcelRange style, not through this manual row iteration.

• Fixes Set-ExcelRow -Height modifies the height of the next row as well #1738