Running ASP.NET Core application with PublishTrimmed set in visual studio makes Microsoft.AspNetCore.Watch.BrowserRefresh fail to execute

### Describe the bug
When `` is set in the csproj, causes `Microsoft.AspNetCore.Watch.BrowserRefresh` to fail. I'm guessing hosting startups will fail when trimmed but I'm surprised this affects the developer experience.

### To Reproduce

```xml

net6.0
enable
true

```

```C#
var builder = WebApplication.CreateBuilder(args);
var app = builder.Build();

app.MapGet("/", () => "Hello World!");

app.Run();
```

### Exceptions (if any)

```
crit: Microsoft.AspNetCore.Hosting.Diagnostics[11]
Hosting startup assembly exception
System.InvalidOperationException: Startup assembly Microsoft.AspNetCore.Watch.BrowserRefresh failed to execute. See the inner exception for more details.
---> System.IO.FileNotFoundException: Could not load file or assembly 'Microsoft.AspNetCore.Watch.BrowserRefresh, Culture=neutral, PublicKeyToken=null'. The system cannot find the file specified.
File name: 'Microsoft.AspNetCore.Watch.BrowserRefresh, Culture=neutral, PublicKeyToken=null'
at System.Reflection.RuntimeAssembly.InternalLoad(ObjectHandleOnStack assemblyName, ObjectHandleOnStack requestingAssembly, StackCrawlMarkHandle stackMark, Boolean throwOnFileNotFound, ObjectHandleOnStack assemblyLoadContext, ObjectHandleOnStack retAssembly)
at System.Reflection.RuntimeAssembly.InternalLoad(AssemblyName assemblyName, RuntimeAssembly requestingAssembly, StackCrawlMark& stackMark, Boolean throwOnFileNotFound, AssemblyLoadContext assemblyLoadContext)
at System.Reflection.Assembly.Load(AssemblyName assemblyRef)
at Microsoft.AspNetCore.Hosting.GenericWebHostBuilder.ExecuteHostingStartups()
--- End of inner exception stack trace ---
```


### Further technical details

- ASP.NET Core version: Microsoft.AspNetCore.App 6.0.0-rc.1.21406.15

cc @pranavkm @eerhardt