[AspireE2E]There is a warning "AppHost file was specified in '\.aspire\settings.json' but it does not exist at '\.aspire../Aspire02.AppHost.csproj'."when running the aspire app in aspire CLI after enable showAllTemplates

[jinzhao1127]

REGRESSION INFO: Also repro on Aspire CLI 13.0

INSTALL STEPS

1. Clean machine: Windows x64 25h2
2. Install SDK 10.0.100: https://dotnet.microsoft.com/en-us/download/dotnet/thank-you/sdk-10.0.100-windows-x64-installer
3. Install Aspire CLI - version: 13.1.0-preview.1.25604.10
   iex "& { $(irm https://aspire.dev/install.ps1) } -Quality dev"
4. Run aspire config set features.showAllTemplates true enable all templates

REPRO STEPS

1. Create aspire starter app with following command:
   aspire new aspire-starter -o aspire01
2. Go to the project folder and run the app

   cd aspire01\aspire01.AppHost
   aspire run
   

3. Press CTRL+C to stop the process
4. aspire run the project again

Note:

1. This issue also reproduce when running a second app at first time.
2. The "appHostPath" will be automatically added in the settings.json under .aspire folder when run the project;
   After deleting "appHostPath" line. the warning will be disappear
   
3. This issue does not reproduce when there is no settings.json file

ACTUAL
There is a warning "AppHost file was specified in 'C:\Users\v-zhajin.aspire\settings.json' but it does not exist at
'C:\Users\v-zhajin.aspire../Aspire02.AppHost.csproj'."

"EXPECTED"
There is no any warning or error on the CLI window

Error log:

⚠  AppHost file was specified in 'C:\Users\v-zhajin\.aspire\settings.json' but it does not exist at
'C:\Users\v-zhajin\.aspire\../Aspire02.AppHost.csproj'.