feat(trip_planner): Use <.itinerary_summary /> in the details panel #5318

Job	Run time
Build application and assets	3m 40s
Build Docker image	3m 39s
file_changes	5s
Linting / CSS	23s
Linting / JavaScript	30s
Linting / Elixir	3m 30s
Linting / TypeScript	37s
Unit tests / JavaScript / Mocha	38s
Formatting / Elixir	3m 7s
Unit tests / JavaScript & TypeScript / Jest	2m 5s
Type checks / Elixir	3m 16s
Type checks / TypeScript	31s
Formatting / JavaScript & TypeScript	39s
Unit tests / Elixir / mix coveralls.html	1s
	22m 41s

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