Date of first upload is wrong

What was the cause of the issue?

The date of the first upload is the date where one was registering the extension key.

Steps to reproduce

1. Grab an extension key
2. Wait minimum one day
3. Upload a first version

Example

https://extensions.typo3.org/extension/fluid_form_elements/
First upload was at February 5th, extension key was registered at February 1st.