wizard: enable_keystore: fix for multisig

regression from 66c0fec1ea

electrum/wizard.py

@@ -17,6 +17,7 @@ from electrum.wallet_db import WalletDB
 from electrum.bip32 import normalize_bip32_derivation, xpub_type
 from electrum import keystore, mnemonic, bitcoin
 from electrum.mnemonic import is_any_2fa_seed_type, can_seed_have_passphrase
+from electrum.util import multisig_type
 
 if TYPE_CHECKING:
     from electrum.daemon import Daemon
@@ -257,6 +258,14 @@ class KeystoreWizard(AbstractWizard):
         # one at a time
         return True
 
+    def _convert_wallet_type(self, wizard_data: dict) -> None:
+        assert 'wallet_type' in wizard_data
+        if multisig_type(wizard_data['wallet_type']):
+            wizard_data['wallet_type'] = 'multisig'  # convert from e.g. "2of2" to "multisig"
+            wizard_data['multisig_participants'] = 2
+            wizard_data['multisig_signatures'] = 2
+            wizard_data['multisig_cosigner_data'] = {}
+
     def start(self, *, start_viewstate: WizardViewState = None) -> WizardViewState:
         self.reset()
         if start_viewstate is None:
@@ -265,6 +274,7 @@ class KeystoreWizard(AbstractWizard):
             self._current = WizardViewState(start_view, {}, params)
         else:
             self._current = start_viewstate
+        self._convert_wallet_type(self._current.wizard_data)  # mutating in-place
         return self._current
 
     # returns (sub)dict of current cosigner (or root if first)