Apply correctly the limit of 10 designs per upload
What does this MR do?
Fixes a small issue where the limit being applied to number of Designs being uploaded was 9, when the intention was 10.
Also adds some tests to cover this scenario.
Screenshots
Does this MR meet the acceptance criteria?
Conformity
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Changelog entry -
Documentation created/updated or follow-up review issue created -
Code review guidelines -
Merge request performance guidelines -
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Database guides -
Separation of EE specific content