For external tasks, show camunda:taskPriority inherited value from Process level

[MaxTru]

Is your feature request related to a problem? Please describe.

The priority for an external task (camunda:taskPriority) can be defined directly on the task or on process level. When defined on process level, the priority is inherited to the external tasks within the process (but can be overwritten).

See https://docs.camunda.org/manual/7.15/user-guide/process-engine/external-tasks/

Describe the solution you'd like

As a user, I find it very hard to understand the External Task Priority configuration when having selected a Process. I propose to add:

• Description on process level (ala All external tasks inside the process will inherit this priority)
• Dynamic description on external task lavel (ala Inherited value from process level: xyz. Will be overwritten, when defining a local value). OR placeholder text on external task level with the inherited value

Describe alternatives you've considered

n/a

Additional context

When implemented, then we should implement it in the new properties panel: https://github.com/bpmn-io/bpmn-properties-panel

[nikku]

Agreed that we could fairly easily indicate that inheritance via UI.

Likely makes sense to consider once were done with properties-panel@next.

[nikku]

Dynamic description on external task lavel (ala Inherited value from process level: xyz. Will be overwritten, when defining a local value).

Could be a placeholder on the field: "10 (inherited from process)".

[andreasgeier]

I would like us to stop adding help texts to the UI as long as they are permanently visible and blow up the properties panel.

The priority could be a number but also an expression. Showing an expression plus a description in brackets as a placeholder is a no-go, in my opinion.