### Godot version

4.2 dev 2

### System information

Windows 10 Godot Engine v4.2.dev2.mono.official.da81ca62a - https://godotengine.org OpenGL API 3.3.0 NVIDIA 536.67 - Compatibility - Using Device: NVIDIA - NVIDIA GeForce GTX 980 Ti

### Issue description

If you have multiple openxr action sets it will fail to load all of the action sets after the first one loaded

### Steps to reproduce

Have multiple openxr action sets

### Minimal reproduction project

N/A
if (supported_extensions != nullptr) {
		
		return true;
	}
	
	XrResult result = xrEnumerateInstanceExtensionProperties(nullptr, 0, &num_supported_extensions, nullptr);
	ERR_FAIL_COND_V_MSG(XR_FAILED(result), false, "OpenXR: Failed to enumerate number of extension properties");
	supported_extensions = (XrExtensionProperties *)memalloc(sizeof(XrExtensionProperties) * num_supported_extensions);
	ERR_FAIL_NULL_V(supported_extensions, false);
	
	for (uint32_t i = 0; i < num_supported_extensions; i++) {
		supported_extensions[i].type = XR_TYPE_EXTENSION_PROPERTIES;
		supported_extensions[i].next = nullptr;
	}
	result = xrEnumerateInstanceExtensionProperties(nullptr, num_supported_extensions, &num_supported_extensions, supported_extensions);
	ERR_FAIL_COND_V_MSG(XR_FAILED(result), false, "OpenXR: Failed to enumerate extension properties");
	for (uint32_t i = 0; i < num_supported_extensions; i++) {
		print_verbose(String("OpenXR: Found OpenXR extension ") + supported_extensions[i].extensionName);
	}
	return true;
}
bool OpenXRAPI::is_extension_supported(const String &p_extension) const {