[IMP] account: rename the button opening the accrual widget, for usability
[IMP] account: rename the button opening the accrual widget, for usability

closes odoo/odoo#36931

Signed-off-by: Laurent Smet <1328e3a5817ff065354bd0f7f4073cbb6dcc7eca@users.noreply.github.com>

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