[BUG] Installer needs dotnet 7, exec needs dotnet 8, the current version is dotnet 9

[SlowStopper]

Describe the bug
Installation doesn't run if .NET 7 is not present in the system, but afterwards the exec won't run if .NET 8 is not installed. On top of that the current .NET version is 9 :-)

To Reproduce
Try installing current release (as of 26.02.25).

Expected behaviour
Focus on a single .NET version. Preferrably the current one.

Desktop (please complete the following information):

• OS Version: [e.g. Windows 11 22H2]