Filter the Flight Explorer view to specific flight leg(s)

Problem:

When reviewing a multi-leg flight in Flight Explorer, all legs are shown together, making it harder to focus on the data for one specific leg.

Desired outcome:

Narrow the Flight Explorer view to one or more selected legs of a multi-leg flight.

Proposed change:

Add a leg selector to Flight Explorer so only the chosen leg(s) are shown in the chart, timeline, and map.

Example:

Useful for operators flying multi-leg or looping missions — passenger transfers, fire response, air tours — where reviewing a single leg in isolation is common.