fix(frontend/DataTransfers): fix a bug where newly added data transfers in...

fix(frontend/DataTransfers): fix a bug where newly added data transfers in `Projects` would not appear in `Data Transfers`

Previously, the data transfers in the data transfer overview table (menu item `Data Transfers`) were only fetched if
none are present.
Now the data transfers will be fetched every time the `Data Transfers` page is opened.

Signed-off-by: martinfrancois <f.martin@fastmail.com>