iOS Templates wont work by default

[MikeCodesDotNET]

Describe the bug

We need to update the iOS template to use NET7 and remove the runtime identifier.

The csproj should look something like this:

<Project Sdk="Microsoft.NET.Sdk">
  <PropertyGroup>
    <TargetFramework>net7.0-ios</TargetFramework>
    <OutputType>Exe</OutputType>
    <Nullable>enable</Nullable>
    <ImplicitUsings>true</ImplicitUsings>
    <SupportedOSPlatformVersion>13.0</SupportedOSPlatformVersion>
  </PropertyGroup>
</Project>

This will then enable deploying to both the simulator and device without needing to edit the csproj.

To Reproduce

Create a new iOS Project. Try and deploy it to a device. It won't work.

Avalonia Templates version

Latest

Avalonia version

Latest RC

Additional context

No response

[Mrxx99]

The xplat template already use .NET 7 by default (and can't be changed to .NET 6 with template parameters).