you can enable it again by following these steps:

1. Go to the Settings module in Odoo.
2. Under the "Technical" section, click on "User Interface."
3. Look for the "Views" menu and click on "Views."
4. In the "Views" list, search for the view associated with the model where you want to enable the "Display stock column in the tree view."
5. Edit the view that corresponds to the model in question. This view typically has the name "tree" in its ID.
6. In the XML view definition, locate the tag.
7. Add the attribute widget="float_time" to this field tag, like this:

field name="product_qty" widget="float_time"/

Save your changes and refresh the page.