ODK Collect v2025.2 Beta: edit finalized/sent forms, MDM configuration, Android 15 support

We found more issues with this implementation and removed it for v2025.2. Specifically, we found that several barcode types were likely to be scanned partially only. We believe we have a path to fixing these issues and are hoping to release the new functionality in v2025.3 by the end of September.

We have a first beta release of v2025.3 with the new barcode scanning implementation behind an opt-in experimental setting. We'll be enabling it as the default in a future beta when the improved scanning is implemented.