### 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
return err;
				}
				gen->write_while(condition);
				if (condition.mode == GDScriptCodeGenerator::Address::TEMPORARY) {
					codegen.generator->pop_temporary();
				}
				err = _parse_block(codegen, while_n->loop);
				if (err) {
					return err;
				}
				gen->write_endwhile();
			} break;
			case GDScriptParser::Node::BREAK: {
				gen->write_break();
			} break;
			case GDScriptParser::Node::CONTINUE: {
				gen->write_continue();
			} break;
			case GDScriptParser::Node::RETURN: {
				const GDScriptParser::ReturnNode *return_n = static_cast<const GDScriptParser::ReturnNode *>(s);
				GDScriptCodeGenerator::Address return_value;
				if (return_n->return_value != nullptr) {
					return_value = _parse_expression(codegen, err, return_n->return_value);
					if (err) {
						return err;
					}
				}
				if (return_n->void_return) {
					
					gen->write_return(codegen.add_constant(Variant()));