Allow adding multiple of a service to one work order

Ability to add multiple of the same service onto a single work order.

Transcript notes (Apr 16 feature sync)

• The transcript adds concrete examples for why this comes up: multiple houses on one property, repeated HERS ratings, and HOA / townhouse scenarios where many similar reports may be needed.
• The discussion also highlighted why this is harder than it sounds: pricing modifiers are often property-based, so duplicating the service does not cleanly solve pricing and template-assignment behavior on its own.
• Product direction from the sync was that direct report-template management may be the better near-term solution, with this issue remaining valid but likely lower leverage until that work lands.