When a GFM table has a row-label column (first column with no header),
_render_table_block_for_telegram incorrectly included the row-label cell
in the bullet zip alongside the data cells, producing a spurious bullet
like '• 維度: 核心賣點' before the real data rows.
Detect the row-label column by comparing the first data row cell count
against the header count (has_row_label_col = len(first_data_row) ==
len(headers) + 1). When present, use cells[0] as the heading and
zip headers against cells[1:] only, correctly excluding the row-label
from the bullet list.
Fixes#22604
8fdaf4d3d6