### Godot version

4.0.2.stable.mono

### System information

Windows 10 - 4.0.2.stable.mono - Any Renderer

### Issue description

In a script with an `@export` variable (with a non-default value), Godot will replace the first variable in the category with the same name. For example, if you're exporting a variable called "Vector", and the value is set to a non-default value, the first variable in the category called "Vector" will also be changed to the same value.

### Steps to reproduce

Attach said script to a node:
```
extends Node

@export var Vector: Vector2
@export_category("Vector")
@export var Var2: float = 1

func _process(delta):
	print(Var2)
```
When changing the value of the `Vector` export variable, the variable Var2 will contain the same value. This does not happen when the `@export_category` has a different name.

### Minimal reproduction project

N/A
type = VARIABLE;
		}
	};
	struct WhileNode : public Node {
		ExpressionNode *condition = nullptr;
		SuiteNode *loop = nullptr;
		WhileNode() {
			type = WHILE;
		}
	};
	enum CompletionType {
		COMPLETION_NONE,
		COMPLETION_ANNOTATION, 
		COMPLETION_ANNOTATION_ARGUMENTS, 
		COMPLETION_ASSIGN, 
		COMPLETION_ATTRIBUTE, 
		COMPLETION_ATTRIBUTE_METHOD, 
		COMPLETION_BUILT_IN_TYPE_CONSTANT_OR_STATIC_METHOD, 
		COMPLETION_CALL_ARGUMENTS, 
		
		COMPLETION_GET_NODE, 
		COMPLETION_IDENTIFIER, 
		COMPLETION_INHERIT_TYPE, 
		COMPLETION_METHOD,