transaction: Append bundle to correct list on flatpak_transaction_add_install_bundle()

Signed-off-by: Andre Moreira Magalhaes <andre@endlessm.com>

Closes: #3025
Approved by: matthiasclasen
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Internal Server Error - Gitea: Git with a cup of tea
500 Internal Server Error

Gitea Version: 1.28.0+dev-477-g8b6ad49a5f