Fix restarting provisioner loop

ts/textsecure/Provisioner.ts

@@ -236,6 +236,7 @@ export class Provisioner {
     }
     log.info(`Provisioner: stopping, reason=${reason}`);
 
+    this.#sockets = [];
     this.#abortController?.abort();
     this.#abortController = undefined;
     this.#isRunning = false;
@@ -272,6 +273,11 @@ export class Provisioner {
 
         log.info(`${logId}: connected, refreshing in ${delay}ms`);
       } catch (error) {
+        // New loop is running
+        if (signal !== this.#abortController?.signal) {
+          return;
+        }
+
         // The only active socket has failed, notify subscribers and shutdown
         if (this.#sockets.length === 0) {
           if (error === TIMEOUT_ERROR || error instanceof ConnectTimeoutError) {
@@ -314,6 +320,11 @@ export class Provisioner {
         // eslint-disable-next-line no-await-in-loop
         await sleep(delay, signal);
       } catch (error) {
+        // New loop is running
+        if (signal !== this.#abortController?.signal) {
+          return;
+        }
+
         // Sleep aborted
         strictAssert(
           this.#subscribers.size === 0,
@@ -439,23 +450,29 @@ export class Provisioner {
     code: number,
     reason: string
   ): void {
-    log.info(`Provisioner: socket closed, code=${code}, reason=${reason}`);
-
     const index = this.#sockets.indexOf(resource);
     if (index === -1) {
+      log.info(
+        'Provisioner: ignoring socket closed, ' +
+          `code=${code}, reason=${reason}`
+      );
       return;
     }
 
+    log.info(`Provisioner: socket closed, code=${code}, reason=${reason}`);
+
     // Is URL from the socket displayed as a QR code?
     const isActive = index === this.#sockets.length - 1;
     this.#sockets.splice(index, 1);
 
     // Graceful closure
     if (state === SocketState.Done) {
+      log.info('Provisioner: socket closed gracefully');
       return;
     }
 
     if (isActive) {
+      log.info('Provisioner: active socket closed');
       this.#notify({
         kind:
           state === SocketState.WaitingForUuid