### 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
if (!field->is_static) {
			continue;
		}
		GDScriptDataType field_type = _gdtype_from_datatype(field->get_datatype(), codegen.script);
		if (field_type.has_type) {
			codegen.generator->write_newline(field->start_line);
			if (field_type.has_container_element_type()) {
				GDScriptCodeGenerator::Address temp = codegen.add_temporary(field_type);
				codegen.generator->write_construct_typed_array(temp, field_type.get_container_element_type(), Vector<GDScriptCodeGenerator::Address>());
				codegen.generator->write_set_static_variable(temp, class_addr, p_script->static_variables_indices[field->identifier->name].index);
				codegen.generator->pop_temporary();
			} else if (field_type.kind == GDScriptDataType::BUILTIN) {
				GDScriptCodeGenerator::Address temp = codegen.add_temporary(field_type);
				codegen.generator->write_construct(temp, field_type.builtin_type, Vector<GDScriptCodeGenerator::Address>());
				codegen.generator->write_set_static_variable(temp, class_addr, p_script->static_variables_indices[field->identifier->name].index);
				codegen.generator->pop_temporary();
			}
			
		}
	}
	for (int i = 0; i < p_class->members.size(); i++) {
		
		if (p_class->members[i].type != GDScriptParser::ClassNode::Member::VARIABLE) {
			continue;
		}
		const GDScriptParser::VariableNode *field = p_class->members[i].variable;
		if (!field->is_static) {
			continue;
		}
		if (field->initializer) {