### Godot version

v4.0.rc1.official [8843d9ad3]

### System information

Lubuntu

### Issue description

You can't use + or += to mutate typed arrays.

It seems to be not correctly getting the type information from the second operand.

An erudite poster on the discord puts it differently:
> it's more like operator + doesn't retain Array typing
> the syntax for Array Concatenation via operators, but the idea gets across i think


The error you see is:
```Trying to assign an array of type "Array" to a variable of type "Array[int]".```


### Steps to reproduce

```
	var Alice: Array[int] = [1,2,3]
	var Bob: Array[int] = [4,5,6]
	Alice += Bob
```
This will crash with the above error message.

### Minimal reproduction project

[plus_syntax_broken_demo_project.zip](https://github.com/godotengine/godot/files/10694514/plus_syntax_broken_demo_project.zip)

OP_EVALUATOR(OperatorEvaluatorBoolXObjectOr, bool, object, _operate_or)
OP_EVALUATOR(OperatorEvaluatorObjectXBoolOr, object, bool, _operate_or)
OP_EVALUATOR(OperatorEvaluatorIntXIntOr, int, int, _operate_or)
OP_EVALUATOR(OperatorEvaluatorIntXFloatOr, int, float, _operate_or)
OP_EVALUATOR(OperatorEvaluatorFloatXIntOr, float, int, _operate_or)
OP_EVALUATOR(OperatorEvaluatorIntXObjectOr, int, object, _operate_or)
OP_EVALUATOR(OperatorEvaluatorObjectXIntOr, object, int, _operate_or)
OP_EVALUATOR(OperatorEvaluatorFloatXFloatOr, float, float, _operate_or)
OP_EVALUATOR(OperatorEvaluatorFloatXObjectOr, float, object, _operate_or)
OP_EVALUATOR(OperatorEvaluatorObjectXFloatOr, object, float, _operate_or)
OP_EVALUATOR(OperatorEvaluatorObjectXObjectOr, object, object, _operate_or)
OP_EVALUATOR(OperatorEvaluatorNilXBoolAnd, nil, bool, _operate_and)
OP_EVALUATOR(OperatorEvaluatorBoolXNilAnd, bool, nil, _operate_and)
OP_EVALUATOR(OperatorEvaluatorNilXIntAnd, nil, int, _operate_and)
OP_EVALUATOR(OperatorEvaluatorIntXNilAnd, int, nil, _operate_and)
OP_EVALUATOR(OperatorEvaluatorNilXFloatAnd, nil, float, _operate_and)
OP_EVALUATOR(OperatorEvaluatorFloatXNilAnd, float, nil, _operate_and)
OP_EVALUATOR(OperatorEvaluatorObjectXNilAnd, object, nil, _operate_and)
OP_EVALUATOR(OperatorEvaluatorNilXObjectAnd, nil, object, _operate_and)
OP_EVALUATOR(OperatorEvaluatorBoolXBoolAnd, bool, bool, _operate_and)
OP_EVALUATOR(OperatorEvaluatorBoolXIntAnd, bool, int, _operate_and)
OP_EVALUATOR(OperatorEvaluatorIntXBoolAnd, int, bool, _operate_and)
OP_EVALUATOR(OperatorEvaluatorBoolXFloatAnd, bool, float, _operate_and)
OP_EVALUATOR(OperatorEvaluatorFloatXBoolAnd, float, bool, _operate_and)
OP_EVALUATOR(OperatorEvaluatorBoolXObjectAnd, bool, object, _operate_and)
OP_EVALUATOR(OperatorEvaluatorObjectXBoolAnd, object, bool, _operate_and)
OP_EVALUATOR(OperatorEvaluatorIntXIntAnd, int, int, _operate_and)
OP_EVALUATOR(OperatorEvaluatorIntXFloatAnd, int, float, _operate_and)
OP_EVALUATOR(OperatorEvaluatorFloatXIntAnd, float, int, _operate_and)
OP_EVALUATOR(OperatorEvaluatorIntXObjectAnd, int, object, _operate_and)