Re-introduces error message when not all required blocks have been filled in.

[hansjovis]

Summary

This PR can be summarized in the following changelog entry:

• [schema-blocks] Fixes a bug where the schema analysis would be green even if some required blocks were not filled in.

Relevant technical choices:

*

Test instructions

This PR can be tested by following these steps:

• Create a new post.
• Add a Job posting block to that post.
• Select an inner block in the newly added Job posting.
• Check the analysis section in the block's sidebar.
  • It should contain a red bullet with the following message: Not all required blocks have been completed! No job posting schema will be generated for your page.
• Add a title, description to the job posting block, choose a location type (either 'office location' or 'remote') and fill the location information in.
• Check the analysis section in the block's sidebar.
  • It should contain a green bullet with the following message: Good job! All required blocks have been completed.
• Remove the title, description and location blocks.
• Check the analysis section in the block's sidebar.
  • It should contain a red bullet with the following message: Not all required blocks have been completed! No job posting schema will be generated for your page.
  • It should contain a red bullet for each removed block with the following message: The '{Block name}' block is required but missing..
    • Note: {Block name} should say either 'Job title', 'Job description' or 'Job location', depending on the removed block.

Impact check

• This PR affects the following parts of the plugin, which may require extra testing:

UI changes

• [ ] This PR changes the UI in the plugin. I have added the 'UI change' label to this PR.

Quality assurance

• [x] I have tested this code to the best of my abilities
• [x] I have added unittests to verify the code works as intended

Fixes #

[abotteram]

CR 👍

[abotteram]

Acceptance 👍

I found some problems, but I'm not sure whether they are related to this specific issue, especially some things have changed in relation to the redux store.

Analysis not updating: known issue

• First I entered a job title and a job description.
• I then selected "Remote job" for job location.
• The analysis was still red, although I have fulfilled all requirements.
• Only after performing another action (like typing), the analysis updates.

Not able to add job location block after removing it. known issue https://yoast.atlassian.net/browse/P2-788

• First I entered a job title and a job description.
• I then selected "Office location" for job location.
• I the removed the job-location block.
• The analysis says the job-location block is still present.
• When I want to add a new (inner) block, the location block is greyed out.