BUG: can't call `getVal` from a matrix expression

[Zeroto521]

Describe the bug

It can't call getVal from a matrix expression. If the expression has a division operation.

To Reproduce

from pyscipopt import Model

model = Model()
model.hideOutput()
x = model.addMatrixVar(3, lb=1, ub=3)

model.setObjective(x.sum(), "maximize")
model.optimize()

print(model.getVal(x))
# [3. 3. 3.]

print(model.getVal(x / x))
# Traceback (most recent call last):
#   line 12, in <module>
#     print(model.getVal(x / x))
#           ^^^^^^^^^^^^^^^^^^^
#   File "src/pyscipopt/scip.pxi", line 10399, in pyscipopt.scip.Model.getVal
# TypeError: Argument 'expr' has incorrect type (expected pyscipopt.scip.Expr, got pyscipopt.scip.ProdExpr)

print(model.getVal((x / x).sum()))
# Traceback (most recent call last):
#   line 20, in <module>
#     print(model.getVal((x / x).sum()))
#           ^^^^^^^^^^^^^^^^^^^^^^^^^^
#   File "src/pyscipopt/scip.pxi", line 10401, in pyscipopt.scip.Model.getVal
# TypeError: Argument 'expr' has incorrect type (expected pyscipopt.scip.Expr, got pyscipopt.scip.SumExpr)

Expected behavior

Get the value without any error.

Screenshots

System

• OS: Windows 11
• Version: 24H2 (26100.4061)
• SCIP version: 9.2.3
• How did you install pyscipopt?: build from c681f94, base on 5.5.0

[Joao-Dionisio]

Same with normal variables, this isn't a matrix variable bug.