fix: Consider only Approved leave applications in LWP, Employee Benefit calculations

- do not allow submitting leave applications with 'Cancelled' status

erpnext/hr/doctype/leave_application/leave_application.py

@@ -88,7 +88,7 @@ class LeaveApplication(Document):
 		share_doc_with_approver(self, self.leave_approver)
 
 	def on_submit(self):
-		if self.status == "Open":
+		if self.status in ["Open", "Cancelled"]:
 			frappe.throw(
 				_("Only Leave Applications with status 'Approved' and 'Rejected' can be submitted")
 			)
@@ -1117,7 +1117,7 @@ def add_leaves(events, start, end, filter_conditions=None):
 	WHERE
 		from_date <= %(end)s AND to_date >= %(start)s <= to_date
 		AND docstatus < 2
-		AND status != 'Rejected'
+		AND status in ('Approved', 'Open')
 	"""
 
 	if conditions:
@@ -1206,6 +1206,7 @@ def get_approved_leaves_for_period(employee, leave_type, from_date, to_date):
 		from `tabLeave Application`
 		where employee=%(employee)s
 			and docstatus=1
+			and status='Approved'
 			and (from_date between %(from_date)s and %(to_date)s
 				or to_date between %(from_date)s and %(to_date)s
 				or (from_date < %(from_date)s and to_date > %(to_date)s))

erpnext/payroll/doctype/employee_benefit_application/employee_benefit_application.py

@@ -216,6 +216,7 @@ def calculate_lwp(employee, start_date, holidays, working_days):
 			where t2.name = t1.leave_type
 			and t2.is_lwp = 1
 			and t1.docstatus = 1
+			and t1.status = 'Approved'
 			and t1.employee = %(employee)s
 			and CASE WHEN t2.include_holiday != 1 THEN %(dt)s not in ('{0}') and %(dt)s between from_date and to_date
 			WHEN t2.include_holiday THEN %(dt)s between from_date and to_date

erpnext/payroll/doctype/salary_slip/salary_slip.py

@@ -477,6 +477,7 @@ class SalarySlip(TransactionBase):
 				WHERE t2.name = t1.leave_type
 				AND (t2.is_lwp = 1 or t2.is_ppl = 1)
 				AND t1.docstatus = 1
+				AND t1.status = 'Approved'
 				AND t1.employee = %(employee)s
 				AND ifnull(t1.salary_slip, '') = ''
 				AND CASE