Prepare withdraw routes part of the HP managament

Requires: !306 (merged)

clive/__private/ui/operations/hive_power_management/power_down/power_down.py

@@ -51,9 +51,14 @@ class ScrollablePart(CanFocusWithScrollbarsOnly):
 class WithdrawRoutesDisplay(CliveWidget):
     """Widget used just to inform user to which account has withdrawal route and how much % it is."""
 
+    def __init__(self) -> None:
+        super().__init__()
+        self._pretty = Pretty({})
+        self._pretty.display = False
+
     def compose(self) -> ComposeResult:
         yield Static("Loading...", id="withdraw-routes-header")
-        yield Pretty({})
+        yield self._pretty
 
     def on_mount(self) -> None:
         self.watch(self.provider, "_content", self._update_withdraw_routes, init=False)
@@ -62,7 +67,7 @@ class WithdrawRoutesDisplay(CliveWidget):
         """Update withdraw routes pretty widget."""
         if not content.withdraw_routes:
             self.query_one("#withdraw-routes-header", Static).update("You have no withdraw routes")
-            self.query_one(Pretty).display = False
+            self._pretty.display = False
             return
 
         withdraw_routes = {
@@ -70,8 +75,8 @@ class WithdrawRoutesDisplay(CliveWidget):
             for withdraw_route in content.withdraw_routes
         }
         self.query_one("#withdraw-routes-header", Static).update("Your withdraw routes")
-        self.query_one(Pretty).update(withdraw_routes)
-        self.display = True
+        self._pretty.update(withdraw_routes)
+        self._pretty.display = True
 
     @property
     def provider(self) -> HivePowerDataProvider: