refactor: improve and simplify embed pagination

[ExampleWasTaken]

Description

This PR refactors the pagination for generic paginated embeds as well as the paginated infraction embed for /infractions list <user>.

Changes in this PR:

• Changed the handler function name to better indicate its functionality.
• Added logic to remove the action row when the collector expires.

Test Results

Generic pagination - single page:

Generic pagination - first page:

Generic pagination - inner page:

Generic pagination - last page:

Expired embed (applies to both generic and infraction embeds):

Discord Username

examplewastaken