`mfv.LogicalName` throws exceptions for `CLIEvent` properties

[auduchinok]

Consider the following F# snippet:

type T() = 
    [<CLIEvent>]
    member this.Event = Event<int>().Publish

Steps to reproduce:

• get all symbols via checkResults.GetAllUsesOfAllSymbolsInFile()
• iterate via all symbols and access LogicalName property

Expected result: no exceptions
Actual result: exception on accessor members:

System.Exception: Invalid internal property name: 'remove_Event'
   at Microsoft.FSharp.Core.PrintfModule.PrintFormatToStringThenFail@1448.Invoke(String message)

This is a recent regression and it hasn't been happening with FCS main from ~November.