Adapt to new libimagstore::iter::Entries API

Use Entries::into_storeid_iter() for transforming iterator into right
type.

Signed-off-by: Matthias Beyer <mail@beyermatthias.de>

lib/core/libimagstore/src/storeid.rs

@@ -309,7 +309,7 @@ impl<'a> StoreIdIteratorWithStore<'a> {
         StoreIdIteratorWithStore(StoreIdIterator::new(iter), store)
     }
 
-    pub fn without_store(self) -> StoreIdIterator {
+    pub fn into_storeid_iter(self) -> StoreIdIterator {
         self.0
     }