Runtime version should be part of file-based app cache

[jjonescz]

To prevent this sort of bug:

1. dotnet run file.cs with .net10p6 which is only available locally
2. dotnet run file.cs where no .net10p6 is available, only .net10p5 is available (e.g., globally)
3. because --no-build implicitly happens in the second step, and it only tries to execute the 10p6-built executable without a 10p6 runtime available, an error occurs "You must install or update .NET to run this application."