[fix] Add control on wallet login, to avoid the call of csWallet.login() without arguments

www/.well-known/assetlinks.json

+[{
+  "relation": ["delegate_permission/common.handle_all_urls"],
+  "target": {
+    "namespace": "android_app",
+    "package_name": "fr.duniter.cesium",
+    "sha256_cert_fingerprints":
+    ["BF:B9:09:74:EE:4F:FF:C7:F5:D1:93:10:86:2C:C0:13:87:81:54:82:F0:5C:18:ED:13:31:D1:A7:25:56:A4:BD"]
+  }
+}]