Divider disappears after create pipeline

[dpanshug]

Closes: #1681

Description

This will add a divider between Pipelines and Model serving section.

How Has This Been Tested?

1. Create a Data science project and open it.
2. Scroll down to Pipelines section.
3. Assure there is no pipeline.
4. A divider will exist between Pipeline and Model serving section.

Test Impact

No test require because only adding a divider.

Request review criteria:

Self checklist (all need to be checked):

• The developer has manually tested the changes and verified that the changes work
• Commits have been squashed into descriptive, self-contained units of work (e.g. 'WIP' and 'Implements feedback' style messages have been removed)
• Testing instructions have been added in the PR body (for PRs involving changes that are not immediately obvious).
• The developer has added tests or explained why testing cannot be added (unit tests & storybook for related changes)

If you have UI changes:

• Included any necessary screenshots or gifs if it was a UI change.
• Included tags to the UX team if it was a UI/UX change.

After the PR is posted & before it merges:

• The developer has tested their solution on a cluster by using the image produced by the PR to main

[manaswinidas]

@dpanshug Can you squash the commits?

Also, please remove the WIP label in case you're done.

[dpanshug]

@dpanshug Can you squash the commits?

Also, please remove the WIP label in case you're done.

@manaswinidas Done 👍

[christianvogt]

/lgtm
/approve

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