fixed bug that processes without required params was saving after cancel button click

[15rubles]

fixed bug that processes without required params was saving after cancel button click

References

Add references/links to any related issues or PRs. These may include:

• Fixes Processes: Cancel button posts the form data instead of canceling  DSpace/DSpace#8975

Description

fixed bug that processes without required params was saving after cancel button click

Instructions for Reviewers

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List of changes in this PR:
fixed bug that processes without required params was saving after cancel button click

To test:
Try to recreate what was written in DSpace/DSpace#8975 . Now it would work as expected.

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