[Tests] Add nested touchables e2e test (#4426)

## Description

Updates `Nested touchables` example and adds an e2e argent flow

## Test plan

`argent flow run nested-touchables-test`

Jakub Piasecki committed 18d ago

399e8998346f4e96f53cb7b637e06153f98587e4

Parent: 15724d9

Committed by GitHub <noreply@github.com> on 8/18/2026, 2:36:37 PM