(chocolatey#2304) Fix list --exact -a for prereleases

Due to a prior fix in the logic for `list -e -a`, all packages with the
target ID were being returned, regardless of whether the user uses the
`--pre` flag or not. Since the same search without `--exact` does not
return prerelease versions unless the `--pre` option is also passed, the
behaviour for `list -e -a` should match this.

This fix modifies the search logic used when listing all package
versions with `--exact` to also check for and respect the `--pre` flag
from the configuration context, much like other list commands use the
setting in this file in other places.

src/chocolatey/infrastructure.app/nuget/NugetList.cs

@@ -69,7 +69,9 @@ private static IQueryable<IPackage> execute_package_search(ChocolateyConfigurati
                 {
                     // convert from a search to getting packages by id.
                     // search based on lower case id - similar to PackageRepositoryExtensions.FindPackagesByIdCore()
-                    results = packageRepository.GetPackages().Where(x => x.Id.ToLower() == searchTermLower);
+                    results = packageRepository.GetPackages().Where(
+                        p => p.Id.ToLower() == searchTermLower
+                            && (configuration.Prerelease || p.IsReleaseVersion()));
                 }
                 else
                 {