Vet/race fixes (#4421)

This addresses all found vet/race fixes in community edition.

---------

Co-authored-by: Damian Debkowski <damian.debkowski@hashicorp.com>

internal/host/plugin/service_list_host_sets_ext_test.go

@@ -169,7 +169,7 @@ func TestService_ListHostSets(t *testing.T) {
 			filterFunc := func(_ context.Context, s host.Set, plg *plugin.Plugin) (bool, error) {
 				return true, nil
 			}
-			_, _, err = hostplugin.ListHostSetsPage(ctx, []byte("some hash"), 1, filterFunc, nil, repo, catalog.GetPublicId())
+			_, _, err := hostplugin.ListHostSetsPage(ctx, []byte("some hash"), 1, filterFunc, nil, repo, catalog.GetPublicId())
 			require.ErrorContains(t, err, "missing token")
 		})
 		t.Run("wrong token type", func(t *testing.T) {