I noticed this when testing MLDQA-18414. Now (4.3 onwards) the tool value is supposed to trump the value included in the content item return, always. This is the case when creating a single item, but when using the multiple-item flow, the instance data must be set incorrectly, meaning that per-instance values of the launch container are still supported. They shouldn't be.

To replicate:

1. Make your site public, e.g. ngrok or similar
2. Go to "Site admin > Plugins > Activity plugins > External tool > Manage tools"
3. Enter https://robotest.theedtech.dev/register and click "Add LTI Advantage"
4. Activate the tool when you've completed the registration
5. Edit the tool and set "Tool configuration usage" to "Show in activity chooser and as a preconfigured tool"
6. Make sure "Default launch container" is set to "Embed (without blocks)", which should be the default
7. Save.
8. Go to a course
9. In an empty section, click to add a new activity, selecting "Robotest" when prompted
10. Click "Select content"
11. When the modal loads, click "One of each please" (the far right option)
12. Now, continue to save the next page
13. When you're back on course home, notice that you now have 4 activities in that section
14. Launch the one that contains "Not graded (new win)" in the title
    Expected The tool launches in embedded view, per the default launch container
    Actual The tool launches in a new window