Add field names: whenExpr to Clause, isMutable to Field (#6308)
Add field names: whenExpr to Clause, isMutable to Field (#6308)


brettfo/visualfsharp,dsyme/fsharp,dsyme/fsharp,cloudRoutine/FSharp.Compiler.Service,brettfo/visualfsharp,cloudRoutine/FSharp.Compiler.Service,brettfo/visualfsharp,dsyme/fsharp,dsyme/fsharp,cloudRoutine/FSharp.Compiler.Service,dsyme/fsharp,brettfo/visualfsharp,brettfo/visualfsharp,brettfo/visualfsharp,dsyme/fsharp,dsyme/fsharp