Input Map's joypad button numbers are not converted to new numbers in 3->4 conversion

[miv391]

Godot version

v4.0.3.rc2.official [2ac4e3b]

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:

is converted to this:

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

Steps to reproduce

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

Minimal reproduction project

conv_test.zip