JavaScript engine fails to initialize on IntelliJ IDEA 2026.x

**Error:**
```
ScriptEngineManager providers.next(): javax.script.ScriptEngineFactory: Provider com.oracle.truffle.js.scriptengine.GraalJSEngineFactory could not be instantiated
```

**Environment:**
- IntelliJ IDEA: 2026.1.1 (IU-261.23567.138)
- JDK: 21
- Plugin version: 1.3