fix: make callback of next in beforeRouterEnter more consistent

[zrh122]

Improve #2728. Make callback of next to be called as same order as beforeRouterEnter.

[posva]

Hi, thanks! Could you add a test for this? An e2e test should do it. You could check that a string grows to a specific value (to check the order is right) but if you have a better idea, that's good too!

[zrh122]

@posva , I will add a test for it. I intend to add the test in navigation guards, but I find that the test code in this file never execute because it just return when find use PhantomJS, and currently only use PhantomJS.

[posva]

I see, I will take a look next week then and keep you posted. Thanks for #2749 BTW!

[posva]

As you said, it does fix #2761 too, I added a test for that. I will add another test for the other case too

[zrh122]

As you said, it does fix #2761 too, I added a test for that. I will add another test for the other case too

Thx.

[vue-bot]

Hey @zrh122, thank you for your time and effort spent on this PR, contributions like yours help make Vue better for everyone. Cheers! 💚