@vaadin/router 1.7.2 is failing some routing related integration tests in Flow

[haijian-vaadin]

@vaadin/router 1.7.2 fixed some routing issues in Flow (#7665, #7572, #8071), it's causing some regressions in Flow, the following Integration tests are failing

• MultipleAnchorsIT#numerousEqualAnchorsShouldRepresentOneHistoryEntry. In router 1.7.2, click on the same link will call the lifecycle callbacks. But for the anchors which only update hash in the URL, it's better not to call the callbacks, as asserted in this test.
• ScrollIT