GIPSL: use of `abs([...])` with constant elements in `function` generates an error

[maxkratz]

This does not work:

// S7: The number of days between a patient's release date and their actual date of admission should be minimized.
function calculateWaitTime with selectedShiftToFirstWorkload {
	abs((context.nodes.vsw.shift.shiftNo / 3) - context.nodes.p.earliestDay) * context.value
}

This works (extra brackets ()):

// S7: The number of days between a patient's release date and their actual date of admission should be minimized.
function calculateWaitTime with selectedShiftToFirstWorkload {
	abs(((context.nodes.vsw.shift.shiftNo / 3) - context.nodes.p.earliestDay)) * context.value
}