fix: prevent cy.type from losing focus from element on blur

[kuceb]

• Closes Cypress Doesn't Finish Typing Strings Before Continuing to Next Field #5480
  however, there are unlreated behaviors to the original being mentioned in that issue, which are not fixed

User facing changelog

Bug fix: fix issue causing cy.type to not type the entire string into the target element (regression from 3.5.0)

Additional details

• this prevents issues with page loads / framework rerenders sometimes causing focus to be lost by an element mid-type, causing characters to be typed into the body instead of the input.
• not a breaking change since this only affects typing when element is blurred mid-type, and cy.type will still follow focus mid-type unless the new element is body or null (element was blurred, no new element was focused)

How has the user experience changed?

PR Tasks

• Have tests been added/updated?
• Has the original issue or this PR been tagged with a release in ZenHub?

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[cypress]

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Test summary

3872 • 0 • 52 • 1

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Run details

Project	cypress
Status	Passed
Commit	63d19c5
Started	Nov 20, 2020 12:49 PM
Ended	Nov 20, 2020 1:00 PM
Duration	11:26 💡
OS	Linux Debian - 10.2
Browser	Firefox 77

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[kuceb]

failures unlrelated

[jennifer-shehane]

Seems like a good compromise to me, especially since there aren't a lot of use cases provided to us.