drop global var for uploads indexation #14418
Merged
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This change is required to allow a user to add files to a file field which is rendered with pre-uploaded files.
This use case may happen in Formcreator when a validator validates answers containing a file question. This PR is required for pluginsGLPI/formcreator#3226
The goal is to not start the uploads index from zero, but counts the existing inputs related to a file upload field instead.