Improving non-constant evaluation TLC error message - #327

. Instead of `The configuration file substitutes constant Edges with non-constant const_15810191316643000.` the user is now presented with:
```
The configuration file substitutes constant Edges with non-constant const_15810191316643000 - specifically: Attempted to select field "n4" from a non-record value n2
line 16, col 27 to line 16, col 32 of module MC
```

[Bug][Tools]