Refactored row selection logic to leverage DevExpress's native
`@bind-SelectedDataItem` for automatic updates to the
`_selectedEnvelope` variable. Added `AllowSelectRowByClick`
to enable row selection via single click. Updated event
handlers for layout auto-loading and auto-saving to use
specific methods for different grids. Simplified `OnRowClick`
method by removing redundant manual selection logic and
retaining toggle behavior for deselecting the same row.
Updated comments to reflect these changes.
TekH
a0bfd405f0