Feature: #91021 - Filter by stage in Workspaces Module

See Issue #91021

Description

When reviewing staged changes in a larger workspace environment, editors who need to review changes or send them to the next stage now have an additional filter dropdown in the Workspaces module to only show records that are in a specific stage.

Impact

A new dropdown to narrow down lot of records has been added to the Workspaces administration module, which is automatically populated with available stages for the specific workspace.