Before this commit, since we used to show custom label for project and assignees
as 'private' and 'unassigned' section in pivot view, if we want to display show
custom label for groupby with sub group type we might get confuse with passing
'groupby' attribute on _getEmptyGroupLabel pivot method.
In this commit, fixes groupby issue by passing 'fieldname' instead of 'groupby'
cause groupby contains 'groupname : subgroup' like 'deadline : year'.
closesodoo/odoo#130960
Task: 3186578
X-original-commit: cae3531deb032289f5f823df7ffa565ee89189ea
Signed-off-by: Xavier Bol (xbo) <xbo@odoo.com>
kais-odoo
32dec19ee0