[__main__] fix vertical header horizontal spacing after font load

Width was not resizing on load of longer strings like "MONO" and last letter was clipped. This change fixes it.

Author: chrissimpkins

src/slice/__main__.py

@@ -36,6 +36,7 @@
     QGridLayout,
     QGroupBox,
     QHBoxLayout,
+    QHeaderView,
     QLabel,
     QMainWindow,
     QPushButton,
@@ -672,7 +673,11 @@ def load_font(self, filepath):
 
         name_table_was_set = self.name_table_model.load_font(self.font_model)
         axis_value_table_was_set = self.fvar_table_model.load_font(self.font_model)
+
         self.fvar_table_view.resizeColumnToContents(0)
+        self.fvar_table_view.verticalHeader().resizeSections(
+            QHeaderView.ResizeToContents
+        )
 
         # uncheck all bit flag setting check boxes
         self.os2_fsselection_bit_0_checkbox.setChecked(False)