Move conditional rendering logic for the share button to remove styling

[dskamiotis]

What does this change?

Moves the share-button conditional rendering logic outside the parent container so the container is not rendered when the share button is omitted.
This prevents the unused top padding from being applied when no share button is shown.

Why?

A related PR introduced conditional rendering for the share button: #16139
In the current implementation, when the share button is not rendered, the parent container still renders and applies padding-top, leaving unnecessary spacing.
This is a small cleanup that avoids that layout side effect.

[github-actions]

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[akash1810]

Please rebase this branch against main before deploying to CODE. #16321 made some changes to CI and infrastructure. Deploying this branch without these changes present will either:

• Fail when using Riff-Raff's default update strategy
• OR delete the new infrastructure if using Riff-Raff's "dangerous" mode

Please rebase this branch against main before deploying to CODE.

[github-actions]

"This PR is stale because it has been open 30 days with no activity. Unless a comment is added or the “stale” label removed, this will be closed in 3 days"

[github-actions]

This PR was closed because it has been stalled for 3 days with no activity.