Home page follow-up fixes

[MisRob]

Summary

(1) fixes missing progress bars in "Continue learning on your own" section
(2) makes sure that content nodes that have progress 0 won't get displayed in "Continue learning from your classes/on your own" sections even though API returns them as resumable - frontend fix for #8573
(3) fixes alignment of learning activity label

Before	After

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@pcenov I also checked why duration information is not displayed on cards and on my server it's because API returns null values. Cards are ready to display duration when it's available. For example, for video resources it looks like:

so hopefully it will work as soon as we have all data available, but would be definitely good to check on it again. Thank you.

References

Closes #8553

Reviewer guidance

Preview cards on the home page in "Continue learning from your classes/on your own" sections

Testing checklist

• Contributor has fully tested the PR manually
• If there are any front-end changes, before/after screenshots are included
• Critical user journeys are covered by Gherkin stories
• Critical and brittle code paths are covered by unit tests

PR process

• PR has the correct target branch and milestone
• PR has 'needs review' or 'work-in-progress' label
• If PR is ready for review, a reviewer has been added. (Don't use 'Assignees')
• If this is an important user-facing change, PR or related issue has a 'changelog' label
• If this includes an internal dependency change, a link to the diff is provided

Reviewer checklist

• Automated test coverage is satisfactory
• PR is fully functional
• PR has been tested for accessibility regressions
• External dependency files were updated if necessary (yarn and pip)
• Documentation is updated
• Contributor is in AUTHORS.md

[nucleogenesis]

Everything LGTM! Thanks Misha!

[pcenov]

Tested and verified as fixed - looking great! Thanks @MisRob