`dotnet watch run` watches the .git folder.

### Describe the bug
The `dotnet watch run` command watches the `.git` folder of my project, sometimes even recompiling due to this error:
> Unable to apply hot reload, restart is needed to apply the changes.

From a simple git stash / git stash pop:

> dotnet watch ⌚ Files added: ./.git/objects/3c/tmp_obj_S92RQS, ./.git/index.lock, ./.git/index, ./.git/objects/3c/82172b9f73e35b3b42e3653c719df4db9726ec
dotnet watch ⌚ Files added: ./.git/objects/3c/tmp_obj_S92RQS, ./.git/index.lock, ./.git/index, ./.git/objects/3c/82172b9f73e35b3b42e3653c719df4db9726ec
dotnet watch ⌚ No hot reload changes to apply.
Files added: ./.git/index.lock, ./.git/index, ./.git/AUTO_MERGE, ./test, ./.git/AUTO_MERGE.lock
dotnet watch ⌚ Files added: ./.git/index.lock, ./.git/index, ./.git/AUTO_MERGE, ./test, ./.git/AUTO_MERGE.lock
dotnet watch ⌚ No hot reload changes to apply.

### To Reproduce

1. Create a new test application in a new git repository where the .csproj file is located in the git root folder.
2. `touch test`
3. `git add test`
4. `dotnet watch run` 
5. `git stash -S`

Now observe the `dotnet watch` console output.

### Exceptions (if any)
N/A

### Further technical details
* `dotnet --info` output:
<details>
  <summary>dotnet --info</summary>
  <pre>
	.NET SDK:
	Version:           9.0.100-rc.1.24452.12
	Commit:            81a714c6d3
	Workload version:  9.0.100-manifests.a7bf2b8f
	MSBuild version:   17.12.0-preview-24422-09+d17ec720d
   
   Runtime Environment:
	OS Name:     arch
	OS Version:  
	OS Platform: Linux
	RID:         linux-x64
	Base Path:   /usr/share/dotnet/sdk/9.0.100-rc.1.24452.12/
   
   .NET workloads installed:
   Configured to use loose manifests when installing new manifests.
   There are no installed workloads to display.
   
   Host:
	 Version:      9.0.0-preview.7.24405.7
	 Architecture: x64
	 Commit:       static
   
   .NET SDKs installed:
	 6.0.133 [/usr/share/dotnet/sdk]
	 8.0.108 [/usr/share/dotnet/sdk]
	 9.0.100-rc.1.24452.12 [/usr/share/dotnet/sdk]
   
   .NET runtimes installed:
	 Microsoft.AspNetCore.App 8.0.8 [/usr/share/dotnet/shared/Microsoft.AspNetCore.App]
	 Microsoft.AspNetCore.App 9.0.0-rc.1.24452.1 [/usr/share/dotnet/shared/Microsoft.AspNetCore.App]
	 Microsoft.NETCore.App 6.0.33 [/usr/share/dotnet/shared/Microsoft.NETCore.App]
	 Microsoft.NETCore.App 8.0.8 [/usr/share/dotnet/shared/Microsoft.NETCore.App]
	 Microsoft.NETCore.App 9.0.0-rc.1.24431.7 [/usr/share/dotnet/shared/Microsoft.NETCore.App]
   
   Other architectures found:
	 None
   
   Environment variables:
	 DOTNET_ROOT       [/usr/share/dotnet]
   
   global.json file:
	 Not found
  </pre>
</details>

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`dotnet watch run` watches the .git folder. #43817

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dotnet watch run watches the .git folder. #43817

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