fix(lld): reset trustchain sdk when trustchain goes to null

more info: live-13410

apps/ledger-live-desktop/src/newArch/WalletSync/hooks/useTrustchainSdk.ts

@@ -1,14 +1,15 @@
 import os from "os";
 import { from, lastValueFrom } from "rxjs";
-import { useMemo } from "react";
+import { useEffect, useMemo, useState } from "react";
 import { getEnv } from "@ledgerhq/live-env";
 import { getSdk } from "@ledgerhq/trustchain/index";
 import { withDevice } from "@ledgerhq/live-common/hw/deviceAccess";
 import Transport from "@ledgerhq/hw-transport";
 import { trustchainLifecycle } from "@ledgerhq/live-wallet/walletsync/index";
-import { useStore } from "react-redux";
+import { useSelector, useStore } from "react-redux";
 import { walletSelector } from "~/renderer/reducers/wallet";
 import { wsStateSelector } from "@ledgerhq/live-wallet/store";
+import { trustchainSelector } from "@ledgerhq/trustchain/store";
 
 export function runWithDevice<T>(
   deviceId: string | undefined,
@@ -40,9 +41,21 @@ export function useTrustchainSdk() {
       }),
     [store],
   );
+
+  const trustchain = useSelector(trustchainSelector);
+
+  // each time Trustchain goes to null, we increment this counter to refresh the SDK that needs to forget its internal state
+  const [trustchainGoesToNullCounter, setTrustchainGoesToNullCounter] = useState(0);
+  useEffect(() => {
+    if (trustchain === null) {
+      setTrustchainGoesToNullCounter(c => c + 1);
+    }
+  }, [trustchain]);
+
   const sdk = useMemo(
     () => getSdk(isMockEnv, defaultContext, lifecycle),
-    [isMockEnv, defaultContext, lifecycle],
+    // eslint-disable-next-line react-hooks/exhaustive-deps
+    [isMockEnv, defaultContext, lifecycle, trustchainGoesToNullCounter],
   );
 
   return sdk;