Change hover effect for context menu to background-color change

[elizavetaRa]

Description

Changes the hover effect from underline to background-color

Related Issue

• Fixes Context menu hover improvements #6560

Motivation and Context

We find, color hover fits better for actions than the underline effect which is commonly used for links.

Types of changes

• Bug fix (non-breaking change which fixes an issue)
• New feature (non-breaking change which adds functionality)
• Breaking change (fix or feature that would cause existing functionality to change)
• Technical debt
• Tests

Checklist:

• Code changes
• Unit tests added
• Acceptance tests added
• Documentation ticket raised:

Open tasks:

• Apply to context menu in the breadcrumb

[update-docs]

Thanks for opening this pull request! The maintainers of this repository would appreciate it if you would create a changelog item based on your changes.

[elizavetaRa]

The breadcrumb context menu has a slightly different design (padding is set to oc-p-m instead of oc-p-s) and the css for the hover effect is set directly in ods. Should I also make changes there?

[sonarcloud]

Kudos, SonarCloud Quality Gate passed!   

0 Bugs
0 Vulnerabilities
0 Security Hotspots
0 Code Smells

No Coverage information
No Duplication information

[ownclouders]

Results for oC10SharingAndTrashbin https://drone.owncloud.com/owncloud/web/23409/33/1
💥 The acceptance tests pipeline failed. The build has been cancelled.

[ownclouders]

Results for oc10SharingIntUsers3 https://drone.owncloud.com/owncloud/web/23409/31/1
💥 The acceptance tests pipeline failed. The build has been cancelled.

[pascalwengerter]

@kulmann CI failed because some image couldn't be pulled, but since it's CSS changes only I'd be happy with a force-merge (and would add a changelog item myself in another PR before we do a (pre-)release)