feat(pipelines): add support for custom `GroupLabelComponent`

[jenny-s51]

What

Towards #204

Description

These updates add pill styling to group node labels as requested per RHOAI UX. Adds TaskPill logic and support for custom GroupLabelComponent

Type of change

• [x] Feature
• [ ] Bugfix
• [ ] Code style update (formatting, renaming)
• [ ] Refactoring (no functional changes, no api changes)
• [ ] Build related changes
• [ ] Documentation content changes
• [ ] Other (please describe):

[patternfly-build]

Preview: https://react-topology-pr-topology-221.surge.sh

[github-actions[bot]]

:tada: This PR is included in version 5.4.0-prerelease.10 :tada:

The release is available on:

• GitHub release
• npm package (@prerelease dist-tag)

Your semantic-release bot :package::rocket: