### 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
}
				}
				gen->write_endif();
			} break;
			case GDScriptParser::Node::FOR: {
				const GDScriptParser::ForNode *for_n = static_cast<const GDScriptParser::ForNode *>(s);
				codegen.start_block();
				GDScriptCodeGenerator::Address iterator = codegen.add_local(for_n->variable->name, _gdtype_from_datatype(for_n->variable->get_datatype(), codegen.script));
				gen->start_for(iterator.type, _gdtype_from_datatype(for_n->list->get_datatype(), codegen.script));
				GDScriptCodeGenerator::Address list = _parse_expression(codegen, err, for_n->list);
				if (err) {
					return err;
				}
				gen->write_for_assignment(iterator, list);
				if (list.mode == GDScriptCodeGenerator::Address::TEMPORARY) {
					codegen.generator->pop_temporary();
				}
				gen->write_for();
				err = _parse_block(codegen, for_n->loop);
				if (err) {
					return err;
				}
				gen->write_endfor();
				codegen.end_block();
			} break;
			case GDScriptParser::Node::WHILE: {
				const GDScriptParser::WhileNode *while_n = static_cast<const GDScriptParser::WhileNode *>(s);
				gen->start_while_condition();
				GDScriptCodeGenerator::Address condition = _parse_expression(codegen, err, while_n->condition);
				if (err) {