Add backfill icon to grid view dag runs #23945

Description

In the grid view, we use a play icon to indicate manually triggered dag runs. We should do the same for a backfilled dag run.

Possible icons can be found here.

Note: We use the manual run icon in both the dag run bar component and in the details panel header

Use case/motivation

Help users quickly differentiate between manual, scheduled and backfill runs.

Related issues

No response

Are you willing to submit a PR?

• Yes I am willing to submit a PR!

Code of Conduct

• I agree to follow this project's Code of Conduct