On export, skip encrypted submissions with manifest but no .enc file. Fix

[anaskhl]

…and mark as failed #895

Closes #

What has been done to verify that this works as intended?

Why is this the best possible solution? Were any other approaches considered?

How does this change affect users? Describe intentional changes to behavior and behavior that could have accidentally been affected by code changes. In other words, what are the regression risks?

Does this change require updates to documentation? If so, please file an issue at https://github.com/getodk/docs/issues/new and include the link below.

[anaskhl]

When reading the list of submissions for parsing, A check is done if the form is encrypted, and submission.xml.enc is not available then log that the file is not available and exclude from the submissions.

[anaskhl]

It looks like the build failed because of java version issue. How can we fix this?