Qualcomm AI Engine Direct - fix for pytorch uplevel

[haowhsu-quic]

Summary

• use 'fold_quantize=False' in convert_pt2e to prevent overwriting state_dict during lowering
• change in _get_updated_graph_siganture to have signature detected correctly

[pytorch-bot]

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❌ 8 New Failures

As of commit d292254 with merge base 304c567 ():

NEW FAILURES - The following jobs have failed:

• Check Labels / Check labels (gh)
  RuntimeError: Error checking labels: PR does not have required labels
• pull / android / run-emulator (gh)
  The process '/usr/bin/sh' failed with exit code 255
• pull / test-llama-runner-qnn-linux (fp32, qnn_16a16w, qnn) / linux-job (gh)
  RuntimeError: Command docker exec -t 514a48f920ee828b7e85e994c6719fad7814081c5f6d6f9971d7866749188dbd /exec failed with exit code 1
• pull / test-static-llama-qnn-linux / linux-job (gh)
  test_llama_stories_110m
• pull / unittest / linux / linux-job (gh)
  exir/backend/test/test_lowered_backend_module.py::TestBackendAPI::test_emit_nested_lowered_backend_module
• pull / unittest / macos / macos-job (gh)
  exir/backend/test/test_lowered_backend_module.py::TestBackendAPI::test_emit_nested_lowered_backend_module
• pull / unittest-editable / linux / linux-job (gh)
  exir/backend/test/test_lowered_backend_module.py::TestBackendAPI::test_emit_nested_lowered_backend_module
• pull / unittest-editable / macos / macos-job (gh)
  exir/tests/test_tracer.py::TestTorchDispatchFXTracer::test_embedding_dynamic_shape_0_stock_tensor

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