fix: restore em-dash characters corrupted to ??? in launch tests (#247)

PR #238 introduced encoding corruption where em-dash characters (—)
were replaced with ??? in four locations in launch.test.js. This
restores the original Unicode em-dash (U+2014) characters.

Co-authored-by: Alan Jowett <alan.jowett@microsoft.com>
Co-authored-by: Copilot <223556219+Copilot@users.noreply.github.com>