### Godot version

v4.0.3.rc2.official [2ac4e3bb3]

### System information

Windows 10

### Issue description

It seems that joypad button numbers are changed in Godot 4. The Godot 3->4 conversion doesn't change the button numbers.

This Godot 3 Input Map:

![kuva](https://github.com/godotengine/godot/assets/49998025/86a7db2a-b5b5-48a3-84f9-999de1ed584a)

is converted to this:

![kuva](https://github.com/godotengine/godot/assets/49998025/30ef5803-0559-4408-b0ac-e878bf167ff7)

It seems that only buttons 0-3 are same in Godot 3 and 4:

![kuva](https://github.com/godotengine/godot/assets/49998025/37818929-9582-4a11-bdbe-617fd51dd501)


### Steps to reproduce

Convert any Godot 3 project having joypad buttons assigned to inputs.

### Minimal reproduction project

[conv_test.zip](https://github.com/godotengine/godot/files/11525027/conv_test.zip)

for (RegEx *regex : input_map_regexes) {
			memdelete(regex);
		}
		for (RegEx *regex : gdscript_properties_regexes) {
			memdelete(regex);
		}
		for (RegEx *regex : gdscript_signals_regexes) {
			memdelete(regex);
		}
		for (RegEx *regex : shaders_regexes) {
			memdelete(regex);
		}
		for (RegEx *regex : builtin_types_regexes) {
			memdelete(regex);
		}
		for (RegEx *regex : theme_override_regexes) {
			memdelete(regex);
		}
		for (RegEx *regex : csharp_function_regexes) {
			memdelete(regex);
		}
		for (RegEx *regex : csharp_properties_regexes) {
			memdelete(regex);
		}
		for (RegEx *regex : csharp_signal_regexes) {
			memdelete(regex);
		}
	}
};
ProjectConverter3To4::ProjectConverter3To4(int p_maximum_file_size_kb, int p_maximum_line_length) {