Implement `Power up` part of hive power management

Requires:

1. !298 (merged) (to change the inputs to the new)

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

@@ -18,7 +18,7 @@ if TYPE_CHECKING:
     from rich.text import TextType
     from textual.app import ComposeResult
 
-    from clive.models import Operation
+    from clive.models import Asset, Operation
 
 
 class ScrollablePart(ScrollableContainer):
@@ -44,11 +44,14 @@ class PowerUp(TabPane, OperationActionBindings):
 
     def compose(self) -> ComposeResult:
         with ScrollablePart():
+            yield Notice("Your governance voting power will be increased after 30 days")
             with Grid(id="power-up-inputs"):
                 yield self._receiver_input
                 yield self._asset_input
-                yield GenerousButton(self._asset_input, self.app.world.profile_data.working_account.data.hive_balance)  # type: ignore[arg-type]
-            yield Notice("Your governance voting power will be increased after 30 days")
+                yield GenerousButton(self._asset_input, self._get_hive_balance)  # type: ignore[arg-type]
+
+    def _get_hive_balance(self) -> Asset.Hive:
+        return self.app.world.profile_data.working_account.data.hive_balance
 
     def _create_operation(self) -> Operation | None | _NotImplemented:
         if not CliveValidatedInput.validate_many(self._asset_input, self._receiver_input):