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/common_hive_power/additional_info_widgets.py

@@ -54,25 +54,25 @@ class WithdrawalInfo(Vertical, CliveWidget):
 
     def compose(self) -> ComposeResult:
         yield Static("Next withdrawal", classes="withdrawal-info-header")
-        yield DynamicLabel(self._provider, "_content", self._get_next_withdrawal_date, id_="withdrawal-info-date")
+        yield DynamicLabel(
+            self._provider, "_content", self._get_next_withdrawal_date, id_="withdrawal-info-date", init=False
+        )
         yield Static("To withdraw", classes="withdrawal-info-header", id="to-withdraw-header")
-        yield DynamicLabel(self._provider, "_content", self._get_to_withdraw_hp, id_="withdrawal-info-vests-amount")
-        yield DynamicLabel(self._provider, "_content", self._get_to_withdraw_vests, id_="withdrawal-info-hp-amount")
+        yield DynamicLabel(
+            self._provider, "_content", self._get_to_withdraw_hp, id_="withdrawal-info-vests-amount", init=False
+        )
+        yield DynamicLabel(
+            self._provider, "_content", self._get_to_withdraw_vests, id_="withdrawal-info-hp-amount", init=False
+        )
 
     def _get_next_withdrawal_date(self, content: HivePowerData) -> str:
-        if self._provider.is_content_set:
-            return humanize_datetime(content.next_vesting_withdrawal)
-        return "loading..."
+        return humanize_datetime(content.next_vesting_withdrawal)
 
     def _get_to_withdraw_hp(self, content: HivePowerData) -> str:
-        if self._provider.is_content_set:
-            return f"{Asset.pretty_amount(content.to_withdraw.hp_balance)} HP"
-        return "loading..."
+        return f"{Asset.pretty_amount(content.to_withdraw.hp_balance)} HP"
 
     def _get_to_withdraw_vests(self, content: HivePowerData) -> str:
-        if self._provider.is_content_set:
-            return f"{Asset.pretty_amount(content.to_withdraw.vests_balance)} VESTS"
-        return "loading..."
+        return f"{Asset.pretty_amount(content.to_withdraw.vests_balance)} VESTS"
 
 
 class APR(DynamicLabel):