style(display): use left alignment for ellipsis in TableWidget

Author: shuoweil

bigframes/display/html.py

@@ -156,7 +156,7 @@ def render_col_cell(col_name):
 
         if show_ellipsis:
             # Ellipsis cell
-            body_parts.append('      <td class="cell-align-center">...</td>')
+            body_parts.append('      <td class="cell-align-left">...</td>')
 
         for col in right_columns:
             render_col_cell(col)

bigframes/display/table_widget.css

@@ -229,10 +229,6 @@ body[data-theme='dark'] .bigframes-widget.bigframes-widget {
   text-align: left;
 }
 
-.bigframes-widget .cell-align-center {
-  text-align: center;
-}
-
 .bigframes-widget .null-value {
   color: var(--bf-null-fg);
 }