A single weird flaky failure in dispatch store action test

[bahmutov]

I have noticed an interesting our of order issue sometimes failing test on CI

Test "examples/blogs__e2e-snapshots/cypress/screenshots/store-spec.js/"

https://circleci.com/gh/cypress-io/cypress-test-example-repos/20843

Notice the switched order in the failed test:

resetting database
POST /reset 200 0.842 ms - -
POST /todos 201 3.096 ms - 62
GET /todos 200 2.684 ms - 76
    1) changes the state after delay

So the initial GET /todos takes a long time - and it overwrites our POST /todos with the new item.

[bahmutov]

Root cause: Vuex was taking its time updating its state, thus the snapshot was incorrectly empty.