### 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.
}
						option = ScriptLanguage::CodeCompletionOption(member.constant->identifier->name, ScriptLanguage::CODE_COMPLETION_KIND_CONSTANT, location);
						if (member.constant->initializer) {
							option.default_value = member.constant->initializer->reduced_value;
						}
						break;
					case GDScriptParser::ClassNode::Member::CLASS:
						if (p_only_functions) {
							continue;
						}
						option = ScriptLanguage::CodeCompletionOption(member.m_class->identifier->name, ScriptLanguage::CODE_COMPLETION_KIND_CLASS, location);
						break;
					case GDScriptParser::ClassNode::Member::ENUM_VALUE:
						if (p_only_functions) {
							continue;
						}
						option = ScriptLanguage::CodeCompletionOption(member.enum_value.identifier->name, ScriptLanguage::CODE_COMPLETION_KIND_CONSTANT, location);
						break;
					case GDScriptParser::ClassNode::Member::ENUM:
						if (p_only_functions) {
							continue;
						}
						option = ScriptLanguage::CodeCompletionOption(member.m_enum->identifier->name, ScriptLanguage::CODE_COMPLETION_KIND_ENUM, location);
						break;
					case GDScriptParser::ClassNode::Member::FUNCTION:
						if (outer || (p_static && !member.function->is_static) || member.function->identifier->name.operator String().begins_with("@")) {
							continue;
						}
						option = ScriptLanguage::CodeCompletionOption(member.function->identifier->name, ScriptLanguage::CODE_COMPLETION_KIND_FUNCTION, location);
						if (member.function->parameters.size() > 0) {