test: prevent race condition failure on it-tests (#2168)

## Proposed change

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Please also include relevant motivation and context. List any
dependencies that is required for this change. -->

## Related issues

- 🐛 Fixes #(issue)
- 🚀 Feature #(issue)

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packages/@o3r/test-helpers/src/utilities/locker.ts

@@ -100,8 +100,12 @@ export class Locker {
           resolve();
         }
       };
-      watcher = watch(this.options.lockFilePath, {persistent: false}, check);
-      watcher.on('error', check);
+      try {
+        watcher = watch(this.options.lockFilePath, {persistent: false}, check);
+        watcher.on('error', check);
+      } catch {
+        check();
+      }
     });
   }
 }