Compare submitted confirmations against those required (#1526)

Changes the logic to compare the number of submitted confirmations against the number required for Safe overview transactions awaiting confirmation:

- Change confirmation flag to compare number of submitted confirmations against the number of those required

src/routes/safes/safes.service.ts

@@ -208,7 +208,8 @@ export class SafesService {
   }): number {
     return args.transactions.reduce(
       (acc, { confirmationsRequired, confirmations }) => {
-        const isConfirmed = confirmationsRequired === 0;
+        const isConfirmed =
+          !!confirmations && confirmations.length >= confirmationsRequired;
         const isSignable =
           !isConfirmed &&
           !confirmations?.some((confirmation) => {