This commit changes the way the new restore flow loads the extra database connections so these will also apply the temporary folder settings and custom pragmas.
This also changes the logic around the SQLite temporary folder. Previously, this folder would unconditionally be set to the general temporary folder, allowing only an override with a custom pragma.
No the setup checks if the system has the environment variable `SQLITE_TMPDIR` set already. If this variable is already set, it will NOT be overwritten.
Actual effects of this change depends on how SQLite internally resolves the temporary folder.
Kenneth Skovhede
fbe79b1ca3