### 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)

Vector<SourceLine> got = split_lines(name);
	(this->*func)(got, reg_container, builtin_script);
	String got_str = collect_string_from_vector(got);
	ERR_FAIL_COND_V_MSG(expected != got_str, false, vformat("Failed to convert %s \"%s\" to \"%s\", got instead \"%s\"", what, name, expected, got_str));
	return true;
}
bool ProjectConverter3To4::test_conversion_with_regex(String name, String expected, void (ProjectConverter3To4::*func)(Vector<SourceLine> &, const RegExContainer &), String what, const RegExContainer &reg_container) {
	Vector<SourceLine> got = split_lines(name);
	(this->*func)(got, reg_container);
	String got_str = collect_string_from_vector(got);
	ERR_FAIL_COND_V_MSG(expected != got_str, false, vformat("Failed to convert %s \"%s\" to \"%s\", got instead \"%s\"", what, name, expected, got_str));
	return true;
}
bool ProjectConverter3To4::test_conversion_basic(String name, String expected, const char *array[][2], LocalVector<RegEx *> &regex_cache, String what) {
	Vector<SourceLine> got = split_lines(name);
	rename_common(array, regex_cache, got);
	String got_str = collect_string_from_vector(got);
	ERR_FAIL_COND_V_MSG(expected != got_str, false, vformat("Failed to convert %s \"%s\" to \"%s\", got instead \"%s\"", what, name, expected, got_str));
	return true;
}
bool ProjectConverter3To4::test_conversion(RegExContainer &reg_container) {