Roslyn incorrectly report some API as `Not Available ⚠` in IntelliSense list for mulit targetframeworks projects

[yyjdelete]

Version Used: VS2022 17.1.0 preview1.1

Steps to Reproduce:

1. Create an new console app, and change it to multi target frameworks with net6.0;net472

<Project Sdk="Microsoft.NET.Sdk">

  <PropertyGroup>
    <OutputType>Exe</OutputType>
    <TargetFrameworks>net6.0;net472</TargetFrameworks>
    <ImplicitUsings>enable</ImplicitUsings>
    <Nullable>enable</Nullable>
    <LangVersion>latest</LangVersion>
  </PropertyGroup>

</Project>

2. Try to autocomplete ProcessStartInfo with the below code

using System.Diagnostics;

Process.Start(new Pro { });//<--Try to autocomplete `ProcessStartInfo` here and see it in IntelliSense list

Expected Behavior: The API should be available for both target framework.

Actual Behavior: Roslyn report ProcessStartInfo is not avilable in net472