bugfix: views: Fix PopUpConfirmationView width to be left panel width.

With 3426854 we adjusted the left panel
width but the PopUpConfimationView box width was fixed. With this we now set
the popup width based on the LEFT_WIDTH width set in UI.

Tests amended.

Author: sumanthvrao

tests/ui/test_ui_tools.py

@@ -996,6 +996,7 @@ class TestPopUpConfirmationView:
     @pytest.fixture
     def popup_view(self, mocker, stream_button):
         self.controller = mocker.Mock()
+        self.controller.view.LEFT_WIDTH = 27
         self.callback = mocker.Mock()
         self.list_walker = mocker.patch(VIEWS + ".urwid.SimpleFocusListWalker",
                                         return_value=[])

zulipterminal/ui_tools/views.py

@@ -738,7 +738,8 @@ def __init__(self, controller: Any, question: Any,
                     [question, urwid.Divider(), wrapped_widget]
                 )))
         urwid.Overlay.__init__(self, prompt, self.controller.view,
-                               align="left", valign="top", width=26,
+                               align="left", valign="top",
+                               width=self.controller.view.LEFT_WIDTH+1,
                                height=8)
 
     def exit_popup_yes(self, args: Any) -> None: