Add diagnostic check for water-tight nodesets

[DanielYankura]

Motivation

Adding more features to the mesh diagnostic system will help users debug issues with their meshes.

Linked to #25278 and #28816

Design

Should be added to MeshDiagnostics Generator. There is a diagnostic feature in progress that would detect when a mesh has external sides without a sideset. This would be similar, but instead look for missing nodesets instead of sidesets.

Impact

Makes it easier to find issues with user meshes.