Remove window reliance in assessor

[nataliashitova]

Summary

This PR can be summarized in the following changelog entry:

Relevant technical choices:

• Removes the check of the window presence and window parameters in assessor.js. Assessor is used by the worker, who has no access to window.
• yoastHideMarkers in only used in the term-scrapper to disable the markings in Category pages. @CarolineGeven why don't we show makings on Category pages? Also see Eye marker in the analysis doesn't highlight anything on categories or tags #1426.
• In general, we want to implement architecture where YoastSEO.js simply provides a list of markings, while the plugin (or any other plugin that makes use of this library) decides whether or not and how to show the markings.

Test instructions

This PR can be tested by following these steps:

• Run the analyze spam and check console that all assessments have run successfully.

Fixes #1669

[igorschoester]

CR & Acceptance 👍
If there should be another action taken due to a response from Caroline, we should do that in a new issue.

[CarolineGeven]

This currently does not work taxonomies. We need to investigate why this doesn't. The eye markers should not be shown.

Yoast/wordpress-seo#10563
Yoast/wordpress-seo#10564