#16273: Fix bug in method getUrlInStore() of product model

[vasilii-b]

Description

This PR reference changes how/what is returned when product model method getUrlInStore() is called $product->getUrlInStore().
Problem is in how the current store is checked and what is returned based on it.

Fixed Issues

1. Method $product->getUrlInStore() returning extremely long URLs, could be a bug #16273
2. Having set Add store code to URLs in Admin Configuration to NO, store code is still shown in the product URL.

Manual testing scenarios

For issue 1 - please see the issue description.
For issue 2:

1. Go to Admin -> Stores -> Configuration -> Catalog -> Web -> Url Options -> Add Store Code to Urls and set it to NO.
2. In some .phtml file, list.phtml for example, call method getUrlInStore() for a product.

Expected Result

Store code is not added into product url

https://www.domain.com/my-product.html

Actual Result

Store code is added into product url

https://www.domain.com/my-product.html?___store=default

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-cicd2]

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2 out of 8 committers have signed the CLA.

✅ fmarangi
✅ magento-engcom-team
❌ victor-v-rad
❌ le0n4eg
❌ RuslanKostiv1
❌ svitja
❌ DianaRusin
❌ zakdma