iOS Emulator - Error loading partial Info.plist template file

# Description

After installation of Mobile.BuildTools, when trying to build against a mac (using a windows dev machine) I get the following error:
```
3>C:\Program Files (x86)\Microsoft Visual Studio\2019\Enterprise\MSBuild\Xamarin\iOS\Xamarin.Shared.targets(235,3): error : Error loading partial Info.plist template file 'obj/iPhoneSimulator/Debug/mbt/Info.plist': Could not find a part of the path "/Users/{username}/Library/Caches/Xamarin/mtbs/builds/APPNAME.iOS/7d8514f9c34759c7f37616f2d70c7b61cbf63c6de70aa83105f84d31c20be54b/obj/iPhoneSimulator/Debug/mbt/Info.plist".
3>C:\Program Files (x86)\Microsoft Visual Studio\2019\Enterprise\MSBuild\Xamarin\iOS\Xamarin.Shared.targets(235,3): error :
```

I don't know if I'm missing something or need to set something else up?

Works on Android.

## Reproduction Steps

Steps to reproduce the behavior:

1. Create new Xamarin.Forms app
2. Install Mobile.BuildTools (leave default buildtools.json)
2. Set to Debug, Simulator
3. Build

## Expected Behavior

Buidl succeeds

## Actual Behavior

Build fails.
Detailed log shows:
```
Target "_CompileAppManifest" in file "C:\Program Files (x86)\Microsoft Visual Studio\2019\Enterprise\MSBuild\Xamarin\iOS\Xamarin.Shared.targets" from project "{path to csproj}" (target "_CreateAppBundle" depends on it):
3>Building target "_CompileAppManifest" completely.
3>Output file "bin\iPhoneSimulator\Debug\APPNAME.iOS.app\Info.plist" does not exist.
3>Using "CompileAppManifest" task from assembly "C:\Program Files (x86)\Microsoft Visual Studio\2019\Enterprise\MSBuild\Xamarin\iOS\..\iOS\Xamarin.iOS.Tasks.dll".
3>Task "CompileAppManifest"
3> CompileAppManifest: 2021-08-11T10:50:36.8795591+01:00 - Started
3> CompileAppManifest: 2021-08-11T10:50:36.8795591+01:00 - Initializing
3> [xma]: Trying to get a Build Connection for Session '7d8514f9c34759c7f37616f2d70c7b61cbf63c6de70aa83105f84d31c20be54b': Xamarin.Messaging.Build.Client.BuildConnection.7d8514f9c34759c7f37616f2d70c7b61cbf63c6de70aa83105f84d31c20be54b, Lifetime: AppDomain
3> CompileAppManifest: 2021-08-11T10:50:36.8795591+01:00 - Initialized
3> CompileAppManifest: 2021-08-11T10:50:36.8795591+01:00 - There's no available inputs to copy to the Mac
3> CompileAppManifest: 2021-08-11T10:50:36.8795591+01:00 - Serializing intputs
3> CompileAppManifest: 2021-08-11T10:50:36.8895601+01:00 - Executing
3> [xma]: Starting remote task execution for 'APPNAME.iOS': Xamarin.iOS.Tasks.CompileAppManifest
3> [xma]: Sending Request Xamarin.Messaging.Build.Contracts.ExecuteTaskMessage to topic xvs/build/execute-task/APPNAME.iOS/7d8514f002fCompileAppManifest
3> [xma]: Received Response of Xamarin.Messaging.Build.Contracts.ExecuteTaskMessage to topic build7d8514f9c34759c7f37616f2d70c7b61cbf63c6de70aa83105f84d31c20be54b1124{redact}/+/xvs/build/execute-task/APPNAME.iOS/7d8514f002fCompileAppManifest
3> CompileAppManifest: 2021-08-11T10:50:36.9125598+01:00 - Logging messages
3>C:\Program Files (x86)\Microsoft Visual Studio\2019\Enterprise\MSBuild\Xamarin\iOS\Xamarin.Shared.targets(235,3): error : Error loading partial Info.plist template file 'obj/iPhoneSimulator/Debug/mbt/Info.plist': Could not find a part of the path "/Users/{username}/Library/Caches/Xamarin/mtbs/builds/APPNAME.iOS/7d8514f9c34759c7f37616f2d70c7b61cbf63c6de70aa83105f84d31c20be54b/obj/iPhoneSimulator/Debug/mbt/Info.plist".
3>C:\Program Files (x86)\Microsoft Visual Studio\2019\Enterprise\MSBuild\Xamarin\iOS\Xamarin.Shared.targets(235,3): error :
3> CompileAppManifest: 2021-08-11T10:50:36.9125598+01:00 - Finished
3>Done executing task "CompileAppManifest" -- FAILED.
3>Done building target "_CompileAppManifest" in project "APPNAME.iOS.csproj" -- FAILED.
3>
3>Build FAILED.
```

## Environment

- OS: Windows 10
- IDE: V22019
- BuildTools Version: 2.0.245
- IDE Version: 16.10.4
- Build Target Framework: Xamarin.iOS

## Reproduction App

Can supply, but can just use the template that ships with VS2019 and installing Mobile.BuildTools nuget

Start with the default buildtools.json and the Xamarin.iOS Xamarin.Shared.targets reference at line 235, then reproduce the Windows-to-Mac Xamarin.iOS simulator build using the listed steps. Trace why obj/iPhoneSimulator/Debug/mbt/Info.plist is missing on the remote build path; done means the sample Xamarin.Forms app builds successfully for the iPhone simulator.

Written by the indexing model from the issue text.