Stop using deleteAll which did the recursion at a very high level, creating a lot of churn between the processes.
Introduce and use new recursive flag which allows delete to "delete all" and handles deletion inside the gateways.
No longer going back and forth between the processes, means that deletion of a large amount of files, using root or shizuku, is now much faster.
See commit msg:
and
https://github.com/d4rken-org/sdmaid-se/issues/1443#issuecomment-2470963574
Closes #1443