storage: always reset applied partitioning before reapplying

I have not managed to understand why this helps, but it seems without
this, often the validation checks fail on some obsolete storage
configuration.

src/apis/storage_partitioning.js

@@ -205,6 +205,7 @@ export const gatherRequests = ({ partitioning }) => {
 };
 
 export const applyStorage = async ({ encrypt, encryptPassword, onFail, onSuccess, partitioning }) => {
+    await resetPartitioning();
     await setInitializeLabelsEnabled({ enabled: true });
     await setBootloaderDrive({ drive: "" });