fix(core): unified search is cut off on small window

[ShGKme]

• Resolves: on a small screen the unified search content is cut off, hiding the last items, including the "Load more results" button. See the scroll bar on the screenshots

Summary

• Height was applied to a wrong element — an internal content instead of the entire dialog container
• Alternative - add a prop to the NcDialog to make it large in height

Screenshots

Before	After

Checklist

• Code is properly formatted
• Sign-off message is added to all commits
• Tests (unit, integration, api and/or acceptance) are included
• Screenshots before/after for front-end changes
• Documentation (manuals or wiki) has been updated or is not required
• Backports requested where applicable (ex: critical bugfixes)

[ShGKme]

Backport to 30 is required

[ShGKme]

/backport 501fa4d to stable31

[ShGKme]

/backport 501fa4d to stable30