Improve waiting for element logic

[AlexanderMoskovkin]

• - ASP.NET Web Dashboard Demo case (see below)
• - Bootstrap transition case (see an example)
• - Clicks on the wrong button #1482

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Here is a test on DevExpress ASP.NET Web Dashboard Demo:

test.page('https://demos.devexpress.com/Dashboard')('Test', async t => {
    await t
        .click(Selector('span').withText('Edit in Designer'))
        .click('.dx-dashboard-designer-menu-button')
        .click(Selector('li').withText('Data Sources'))
        .click(Selector('.dx-dashboard-datasource-list-action').withText('Add'))
        .click(Selector('span').withText('Cancel'))
        .click(Selector('.dx-dashboard-datasource-list-action').withText('Add'));
});

To make it passed it necessary to add some waits between steps. We should check why we don't wait for elements here automatically.

#1482 - it's one more example

[AlexanderMoskovkin]

I'm working on this

[lock]

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