BUG - Odd behaviour with non unique instruments name

[robert-rc2i]

Describe the bug
When two presets have the same name in different banks, the application will only handle one preset and will forget the other one. The presets being kept is random.

To Reproduce
Steps to reproduce the behavior:

1. Take an existing preset and modify it
2. Save the preset with the same name but in a different bank
3. Load the saved preset and you have the chance of not getting the preset that you are looking for.

Expected behavior
The application should be ok in having two presets with the same name as long as they are not in the same bank

Additional context
The instrument unicity should be based on Instrument name and bank and not just instrument name