GR-47402: GraalHPyContext fix querying the HPyBackend engine option

Author: cosminbasca

graalpython/com.oracle.graal.python/src/com/oracle/graal/python/builtins/objects/cext/hpy/GraalHPyContext.java

@@ -314,7 +314,7 @@ public GraalHPyContext(PythonContext context, Object hpyLibrary) throws Exceptio
         PythonLanguage language = context.getLanguage();
         int traceUpcallsInterval = language.getEngineOption(PythonOptions.HPyTraceUpcalls);
         Boolean useNativeFastPaths = language.getEngineOption(PythonOptions.HPyEnableJNIFastPaths);
-        HPyBackendMode backendMode = context.getOption(PythonOptions.HPyBackend);
+        HPyBackendMode backendMode = language.getEngineOption(PythonOptions.HPyBackend);
 
         nextHandle = GraalHPyBoxing.SINGLETON_HANDLE_MAX + 1;
         hpyHandleTable = new Object[IMMUTABLE_HANDLE_COUNT * 2];