icons: add "cloud_yes.png", and rename existing "nocloud"

electrum/gui/qml/components/controls/ChannelDelegate.qml

@@ -38,7 +38,7 @@ ItemDelegate {
             id: walleticon
             source: model.is_backup
                         ? model.is_imported
-                            ? '../../../icons/nocloud.png'
+                            ? '../../../icons/cloud_no.png'
                             : '../../../icons/lightning_disconnected.png'
                         : model.is_trampoline
                             ? '../../../icons/kangaroo.png'

electrum/gui/qt/channels_list.py

@@ -443,7 +443,7 @@ class ChanFeatNoOnchainBackup(ChannelFeature):
     def tooltip(self) -> str:
         return _("This channel cannot be recovered from your seed. You must back it up manually.")
     def icon(self) -> QIcon:
-        return read_QIcon("nocloud")
+        return read_QIcon("cloud_no")
 
 
 class ChannelFeatureIcons:

electrum/gui/qt/main_window.py

@@ -1761,7 +1761,7 @@ class ElectrumWindow(QMainWindow, MessageBoxMixin, Logger, QtEventListener):
                 grid.addWidget(WWLabel(_('Enabled')), cur_row, 1)
             else:
                 label = IconLabel(text='Enabled, non-recoverable channels')
-                label.setIcon(read_QIcon('nocloud'))
+                label.setIcon(read_QIcon('cloud_no'))
                 grid.addWidget(label, cur_row, 1)
                 if self.wallet.db.get('seed_type') == 'segwit':
                     msg = _("Your channels cannot be recovered from seed, because they were created with an old version of Electrum. "