[core] Improve the prop-types of shape

[oliviertassinari]

Fix the issue raised by @tzfrs in #12083 (comment)

The core idea of this change is to update the prop-types to match reality. Here is an example of issue it will solve in people code:

               <Menu
                 id="demo-menu-more"
                 anchorEl={anchorEl}
                 open={Boolean(anchorEl)}
                 onClose={this.handleCloseMore}
                 getContentAnchorEl={null}
                 anchorOrigin={{
+                  vertical: 'top',
                   horizontal: 'right',
                 }}
                 transformOrigin={{
+                  vertical: 'top',
                   horizontal: 'right',
                 }}
               >