SDK Resolver fails to resolve Microsoft.NET.Sdk.WindowsDesktop intermittently when performing a graph build

### Issue Description
The SDK resolver seems to intermittently fail when performing a graph build.

### Steps to Reproduce
`msbuild /graph`

### Expected Behavior
A successful build

### Actual Behavior
Intermittently,

```
Error : Unable to locate the .NET SDK. Check that it is installed and that the version specified in global.json (if any) matches the installed version.
Error MSB4236: The SDK 'Microsoft.NET.Sdk.WindowsDesktop' specified could not be found.
```

### Analysis
This error happens in an internal repo somewhat consistently. Ping me over Teams for details.

Note that this happens in an Azure Pipeline and after a "Use .NET Core" task installs the SDK.

Weirdly, this only happens with `Microsoft.NET.Sdk.WindowsDesktop` and not other SDKs. The specific project it happens with is never the same and sometimes the error doesn't happen at all.

### Versions & Configurations
17.2