### Godot version

4.0 dev_build

### System information

Ubuntu 22.04.1

### Issue description

The "Lookup Symbol" button don't appears for custorm class names.
Related issues: #68475,  #73167.
I tried apply #68311, #69473 and #73196. It don't helps.
The `Ctrl+LMB` works right for all cases.

### Steps to reproduce

Right click to the `CustomClassA` symbol in the `custom_class_b.gd` anywhere. The `Lookup Symbol` button don't appears in the context menu.

### Minimal reproduction project

Example from  #68475.
if (last_assigned_expression && last_assign_line < p_context.current_line) {
		GDScriptParser::CompletionContext c = p_context;
		c.current_line = last_assign_line;
		r_type.assigned_expression = last_assigned_expression;
		if (_guess_expression_type(c, last_assigned_expression, r_type)) {
			return true;
		}
	}
	if (is_function_parameter && p_context.current_function && p_context.current_function->source_lambda == nullptr && p_context.current_class) {
		
		GDScriptParser::DataType base_type = p_context.current_class->base_type;
		while (base_type.is_set()) {
			switch (base_type.kind) {
				case GDScriptParser::DataType::CLASS:
					if (base_type.class_type->has_function(p_context.current_function->identifier->name)) {
						GDScriptParser::FunctionNode *parent_function = base_type.class_type->get_member(p_context.current_function->identifier->name).function;
						if (parent_function->parameters_indices.has(p_identifier)) {
							const GDScriptParser::ParameterNode *parameter = parent_function->parameters[parent_function->parameters_indices[p_identifier]];
							if ((!id_type.is_set() || id_type.is_variant()) && parameter->get_datatype().is_hard_type()) {
								id_type = parameter->get_datatype();
							}
							if (parameter->initializer) {
								GDScriptParser::CompletionContext c = p_context;
								c.current_function = parent_function;
								c.current_class = base_type.class_type;
								c.base = nullptr;
								if (_guess_expression_type(c, parameter->initializer, r_type)) {
									return true;
								}
							}