[Forwardport] M2.2.4 missing meta title tag and doesn't show

[gelanivishal]

Original Pull Request

#15532

FIX for issue #15501 - M2.2.4 missing meta title tag and doesn't show product name if meta title is empty

Description

The current Magento behaviour does not allow to specify a title meta tag and the "Meta Title" option in the product's page is binded to the page's title.

This PR adds the meta tile tag and allows to use title and meta title independently.

Fixed Issues (if relevant)

1. M2.2.4 missing meta title tag and doesn't show product name if meta title is empty #15501: M2.2.4 missing meta title tag and doesn't show product name if meta title is empty

Contribution checklist

• Pull request has a meaningful description of its purpose
• All commits are accompanied by meaningful commit messages
• All new or changed code is covered with unit/integration tests (if applicable)
• All automated tests passed successfully (all builds on Travis CI are green)

[magento-engcom-team]

Hi @gelanivishal. Thank you for your contribution
Here is some useful tips how you can test your changes using Magento test environment.
Add the comment under your pull request to deploy test or vanilla Magento instance:

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[magento-engcom-team]

Hi @miguelbalparda, thank you for the review.
ENGCOM-2378 has been created to process this Pull Request

[sidolov]

Looks like additional logic for title attribute should be here, please, revert.

[gelanivishal]

@sidolov Do you want to keep old logic for 2.3 ?

[sidolov]

@gelanivishal , yes, this logic should be here due to bugfix

[miguelbalparda]

I am closing this PR now due to inactivity. Feel free to reopen and update if you wish to continue.