`dotnet watch` prints `No hot reload changes to apply` when `<AdditionalFiles>` is used in .csproj

### Describe the bug

When `` is added to the .csproj file, dotnet watch stops working for all files in the project and consistently outputs `No hot reload changes to apply`, despite changes being made to the files.
However, the changes can be applied manually by pressing Ctrl+R or restarting dotnet watch.

dotnet watch --verbose

```
PS C:\p\programming\git\HotReloadDemo> dotnet watch --verbose
dotnet watch ⌚ Watching with Hot Reload.
dotnet watch 🔥 Hot reload enabled. For a list of supported edits, see https://aka.ms/dotnet/hot-reload.
💡 Press "Ctrl + R" to restart.
dotnet watch 🔧 Building...
dotnet watch 🚀 Started 'C:\Program Files\dotnet\dotnet.exe' with arguments 'msbuild /nologo /t:Build /restore': process id 21300
Determining projects to restore...
All projects are up-to-date for restore.
HotReloadDemo -> C:\p\programming\git\HotReloadDemo\bin\Debug\net8.0\HotReloadDemo.dll
dotnet watch ⌚ Process id 21300 ran for 1281ms
dotnet watch ⌚ Running MSBuild target 'GenerateWatchList' on 'C:\p\programming\git\HotReloadDemo\HotReloadDemo.csproj'
dotnet watch 🚀 Started 'C:\Program Files\dotnet\dotnet.exe' with arguments 'msbuild /nologo C:\p\programming\git\HotReloadDemo\HotReloadDemo.csproj /p:_DotNetWatchListFile=C:\Users\ksi12\AppData\Local\Temp\tmpkfzfcq.tmp /nologo /v:n /t:GenerateWatchList /p:DotNetWatchBuild=true /p:DesignTimeBuild=true "/p:CustomAfterMicrosoftCommonTargets=C:\Program Files\dotnet\sdk\8.0.404\DotnetTools\dotnet-watch\8.0.404-servicing.24521.39\tools\net8.0\any\DotNetWatch.targets" "/p:CustomAfterMicrosoftCommonCrossTargetingTargets=C:\Program Files\dotnet\sdk\8.0.404\DotnetTools\dotnet-watch\8.0.404-servicing.24521.39\tools\net8.0\any\DotNetWatch.targets" /p:_DotNetWatchTraceOutput=true': process id 23164
dotnet watch ⌚ Process id 23164 ran for 518ms
dotnet watch ⌚ Watching 76 file(s) for changes
dotnet watch ⌚ dotnet-watch is configured to launch a browser on ASP.NET Core application startup.
dotnet watch ⌚ Configuring the app to use browser-refresh middleware.
dotnet watch ⌚ Refresh server running at wss://localhost:13207,ws://localhost:13208.
dotnet watch 🔥 HotReloadProfile: Default.
dotnet watch ⌚ Connecting to the application.
dotnet watch ⌚ MSBuildWorkspace warning: [Warning] Duplicate source file 'C:\p\programming\git\HotReloadDemo\Pages\Privacy.cshtml' in project 'C:\p\programming\git\HotReloadDemo\HotReloadDemo.csproj'
dotnet watch ⌚ Running HotReloadDemo with the following arguments: ''
dotnet watch 🚀 Started 'C:\p\programming\git\HotReloadDemo\bin\Debug\net8.0\HotReloadDemo.exe' with arguments '': process id 24172
dotnet watch 🚀 Started
dotnet watch 🔥 Hot reload capabilities: Baseline AddMethodToExistingType AddStaticFieldToExistingType AddInstanceFieldToExistingType NewTypeDefinition ChangeCustomAttributes UpdateParameters GenericUpdateMethod GenericAddMethodToExistingType GenericAddFieldToExistingType.
info: Microsoft.Hosting.Lifetime[14]
Now listening on: http://localhost:5041
dotnet watch ⌚ Launching browser.
info: Microsoft.Hosting.Lifetime[0]
Application started. Press Ctrl+C to shut down.
info: Microsoft.Hosting.Lifetime[0]
Hosting environment: Development
info: Microsoft.Hosting.Lifetime[0]
Content root path: C:\p\programming\git\HotReloadDemo
warn: Microsoft.AspNetCore.HttpsPolicy.HttpsRedirectionMiddleware[3]
Failed to determine the https port for redirect.
dotnet watch ⌚ File changed: .\Pages\Index.cshtml.
dotnet watch ⌚ No hot reload changes to apply.
dotnet watch ⌚ Updating diagnostics in the browser.
dotnet watch 🔥 Hot reload change handled in 164.3551ms.
```

### To Reproduce

Steps to reproduce the behavior:

1. Create a new Razor project: `dotnet new razor`
2. Modify the .csproj file (you can include any razor page, not just Privacy.cshtml):
```



```
3. Run `dotnet watch`
4. Try editing any other razor page (e.g., Index.cshtml) and observe that changes are not applied.

Alternatively, you can clone my repository to see the issue in action: [hot-reload-bug-demo-2](https://github.com/AlphaBs/hot-reload-bug-demo-2)

### Exceptions (if any)

`dotnet watch` should detect changes made to any Razor pages and apply hot reload appropriately.

### Further technical details

dotnet --info

```
PS C:\p\programming\git\HotReloadDemo> dotnet --info
.NET SDK:
Version: 8.0.404
Commit: 7b190310f2
Workload version: 8.0.400-manifests.77ae465e
MSBuild version: 17.11.9+a69bbaaf5

Runtime Environment:
OS Name: Windows
OS Version: 10.0.26100
OS Platform: Windows
RID: win-x64
Base Path: C:\Program Files\dotnet\sdk\8.0.404\

.NET workloads installed:
Configured to use loose manifests when installing new manifests.
[aspire]
Installation Source: VS 17.10.35004.147
Manifest Version: 8.2.2/8.0.100
Manifest Path: C:\Program Files\dotnet\sdk-manifests\8.0.100\microsoft.net.sdk.aspire\8.2.2\WorkloadManifest.json
Install Type: FileBased

Host:
Version: 9.0.0
Architecture: x64
Commit: 9d5a6a9aa4

.NET SDKs installed:
8.0.300 [C:\Program Files\dotnet\sdk]
8.0.404 [C:\Program Files\dotnet\sdk]
9.0.101 [C:\Program Files\dotnet\sdk]

.NET runtimes installed:
Microsoft.AspNetCore.App 5.0.17 [C:\Program Files\dotnet\shared\Microsoft.AspNetCore.App]
Microsoft.AspNetCore.App 6.0.30 [C:\Program Files\dotnet\shared\Microsoft.AspNetCore.App]
Microsoft.AspNetCore.App 7.0.19 [C:\Program Files\dotnet\shared\Microsoft.AspNetCore.App]
Microsoft.AspNetCore.App 8.0.5 [C:\Program Files\dotnet\shared\Microsoft.AspNetCore.App]
Microsoft.AspNetCore.App 8.0.11 [C:\Program Files\dotnet\shared\Microsoft.AspNetCore.App]
Microsoft.AspNetCore.App 9.0.0 [C:\Program Files\dotnet\shared\Microsoft.AspNetCore.App]
Microsoft.NETCore.App 5.0.17 [C:\Program Files\dotnet\shared\Microsoft.NETCore.App]
Microsoft.NETCore.App 6.0.30 [C:\Program Files\dotnet\shared\Microsoft.NETCore.App]
Microsoft.NETCore.App 7.0.19 [C:\Program Files\dotnet\shared\Microsoft.NETCore.App]
Microsoft.NETCore.App 8.0.5 [C:\Program Files\dotnet\shared\Microsoft.NETCore.App]
Microsoft.NETCore.App 8.0.11 [C:\Program Files\dotnet\shared\Microsoft.NETCore.App]
Microsoft.NETCore.App 9.0.0 [C:\Program Files\dotnet\shared\Microsoft.NETCore.App]
Microsoft.WindowsDesktop.App 5.0.17 [C:\Program Files\dotnet\shared\Microsoft.WindowsDesktop.App]
Microsoft.WindowsDesktop.App 6.0.30 [C:\Program Files\dotnet\shared\Microsoft.WindowsDesktop.App]
Microsoft.WindowsDesktop.App 7.0.19 [C:\Program Files\dotnet\shared\Microsoft.WindowsDesktop.App]
Microsoft.WindowsDesktop.App 8.0.5 [C:\Program Files\dotnet\shared\Microsoft.WindowsDesktop.App]
Microsoft.WindowsDesktop.App 8.0.11 [C:\Program Files\dotnet\shared\Microsoft.WindowsDesktop.App]
Microsoft.WindowsDesktop.App 9.0.0 [C:\Program Files\dotnet\shared\Microsoft.WindowsDesktop.App]

Other architectures found:
x86 [C:\Program Files (x86)\dotnet]
registered at [HKLM\SOFTWARE\dotnet\Setup\InstalledVersions\x86\InstallLocation]

Environment variables:
Not set

global.json file:
C:\p\programming\git\HotReloadDemo\global.json

Learn more:
https://aka.ms/dotnet/info

Download .NET:
https://aka.ms/dotnet/download
```