Dashboards: Allow updating a dashboard if the user doesn't have access to the parent folder (#78075)

* change where folder checks are done for dash creation/updates

* add test for folder not being found

* test fixes

* more test fixes

* add nlint directive to where folder IDs are used

* fix bad merge

* fix test

pkg/tests/api/dashboards/api_dashboards_test.go

@@ -405,7 +405,7 @@ func TestIntegrationCreate(t *testing.T) {
 		var m util.DynMap
 		err = json.Unmarshal(b, &m)
 		require.NoError(t, err)
-		assert.Equal(t, "Folder not found", m["message"])
+		assert.Equal(t, dashboards.ErrFolderNotFound.Error(), m["message"])
 	})
 }