enh(core): replaced previous native a element with NcButton

[emoral435]

• Resolves: [BITV]: Replace link with NcButton #42596

Summary

Replaces native element with the NcButton primary button, that works with contrast, defines the role of the element as role="button", keeps the same logic, and added the <img/> elements alt attribute.

Once this passes all reviews, I will remove all the commented out code unless you guys wish to leave it there :)

🖼️ Screenshots

🏚️ Before	🏡 After

Checklist

• Code is properly formatted
• Sign-off message is added to all commits
• Tests (unit, integration, api and/or acceptance) are included
• Screenshots before/after for front-end changes
• Documentation (manuals or wiki) has been updated or is not required
• Backports requested where applicable (ex: critical bugfixes)

[ShGKme]

Everything looks fine now, thank you for the changes.

Don't forget to remove the commented lines :p

[emoral435]

Gotcha! Will remove the comments now that you have cleared it :) Also dont mind the cherry pick, that was a mistake!

[emoral435]

/backport to stable28

[backportbot-nextcloud]

The backport to stable28 failed. Please do this backport manually.

# Switch to the target branch and update it
git checkout stable28
git pull origin stable28

# Create the new backport branch
git checkout -b fix/foo-stable28

# Cherry pick the change from the commit sha1 of the change against the default branch
# This might cause conflicts. Resolve them.
git cherry-pick abc123

# Push the cherry pick commit to the remote repository and open a pull request
git push origin fix/foo-stable28

Error: Unknown error

More info at https://docs.nextcloud.com/server/latest/developer_manual/getting_started/development_process.html#manual-backport