### 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
} break;
		case GDScriptParser::Node::LITERAL: {
			
			const GDScriptParser::LiteralNode *cn = static_cast<const GDScriptParser::LiteralNode *>(p_expression);
			return codegen.add_constant(cn->value);
		} break;
		case GDScriptParser::Node::SELF: {
			
			if (codegen.function_node && codegen.function_node->is_static) {
				_set_error("'self' not present in static function!", p_expression);
				r_error = ERR_COMPILATION_FAILED;
				return GDScriptCodeGenerator::Address();
			}
			return GDScriptCodeGenerator::Address(GDScriptCodeGenerator::Address::SELF);
		} break;
		case GDScriptParser::Node::ARRAY: {
			const GDScriptParser::ArrayNode *an = static_cast<const GDScriptParser::ArrayNode *>(p_expression);
			Vector<GDScriptCodeGenerator::Address> values;
			
			GDScriptDataType array_type = _gdtype_from_datatype(an->get_datatype(), codegen.script);
			GDScriptCodeGenerator::Address result = codegen.add_temporary(array_type);
			for (int i = 0; i < an->elements.size(); i++) {
				GDScriptCodeGenerator::Address val = _parse_expression(codegen, r_error, an->elements[i]);
				if (r_error) {
					return GDScriptCodeGenerator::Address();
				}
				values.push_back(val);
			}
			if (array_type.has_container_element_type()) {
				gen->write_construct_typed_array(result, array_type.get_container_element_type(), values);