UnderlineNav2: Update total height of the navigation to 48px (#2846)

* total height 45px -> 48px

* test(vrt): update snapshots

* update changeset

* Update snapshots after accepting main for the conflict resolution

* Apply suggestions from code review

Co-authored-by: Katie Langerman <18661030+langermank@users.noreply.github.com>

* snappy update and prettier

* test(vrt): update snapshots

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Co-authored-by: broccolinisoup <broccolinisoup@users.noreply.github.com>
Co-authored-by: Katie Langerman <18661030+langermank@users.noreply.github.com>

Author: broccolinisoup