Change default disable_static_registration to True for onnx

[czoido]

onnxruntime forces this to be True for building: https://github.com/microsoft/onnxruntime/blob/be76e1e1b8e2914e448d12a0cc683c00014c0490/cmake/external/onnxruntime_external_deps.cmake#L542

The problem is that we can't do this right now in Conan Center Index for the onnxruntime recipe:

    def configure(self):
        if self.options.shared:
            self.options.rm_safe("fPIC")
        self.options["onnx"].disable_static_registration = True

Because we would get missing binaries, and if we raise Invalid Configuration then we won't actually build onnxruntime.

As the only recipe that uses onnx y Conan Center Index is onnxruntime and for that case we need to set this. I think it's better to change the default for the upstream and use True for this option.

Also related with: #22557

[conan-center-bot]

Conan v1 pipeline ✔️

All green in build 4 (870a0fdc7a99eb6199bc7a55ead9b6f4ca029d8e):

• onnx/1.16.2:
  All packages built successfully! (All logs)

• onnx/1.16.1:
  All packages built successfully! (All logs)

• onnx/1.16.0:
  All packages built successfully! (All logs)

• onnx/1.15.0:
  All packages built successfully! (All logs)

• onnx/1.13.1:
  All packages built successfully! (All logs)

• onnx/1.14.0:
  All packages built successfully! (All logs)

• onnx/1.14.1:
  All packages built successfully! (All logs)

---

Conan v2 pipeline ✔️

Note: Conan v2 builds are now mandatory. Please read our discussion about it.

All green in build 4 (870a0fdc7a99eb6199bc7a55ead9b6f4ca029d8e):

• onnx/1.16.2:
  All packages built successfully! (All logs)

• onnx/1.16.1:
  All packages built successfully! (All logs)

• onnx/1.16.0:
  All packages built successfully! (All logs)

• onnx/1.13.1:
  All packages built successfully! (All logs)

• onnx/1.14.1:
  All packages built successfully! (All logs)

• onnx/1.14.0:
  All packages built successfully! (All logs)

• onnx/1.15.0:
  All packages built successfully! (All logs)