### Tested versions

See "System information" below.

### System information

Godot v4.1.4.rc (2d3b2abcf) - Windows 10.0.19045 - Vulkan (Compatibility) - NVIDIA GeForce GTX 970 (NVIDIA; 31.0.15.2698) - Intel(R) Core(TM) i7-6700K CPU @ 4.00GHz (8 Threads)

### Issue description

POT generation ignores tr() expression in dictionaries:
```python
var strDeclarer = { 'N':tr("North"), 'E':tr("East"), 'S':tr("South"), 'W':tr("West") }[declarer]
var strVulnerable = { 0:tr("none"), 1:tr("both"), 2:tr("NS"), 3:tr("EW") }[vulnerable]
```
Strings as tr() parameters do not show up in the POT file.

### Steps to reproduce

FYI: [Creating the PO template - Automatic generation using the editor](https://docs.godotengine.org/en/stable/tutorials/i18n/localization_using_gettext.html#automatic-generation-using-the-editor)

### Minimal reproduction project (MRP)

N/A
_assess_expression(binary_op_node->right_operand);
			break;
		}
		case GDScriptParser::Node::CALL: {
			const GDScriptParser::CallNode *call_node = static_cast<const GDScriptParser::CallNode *>(p_expression);
			_extract_from_call(call_node);
			for (int i = 0; i < call_node->arguments.size(); i++) {
				_assess_expression(call_node->arguments[i]);
			}
		} break;
		case GDScriptParser::Node::DICTIONARY: {
			const GDScriptParser::DictionaryNode *dict_node = static_cast<const GDScriptParser::DictionaryNode *>(p_expression);
			for (int i = 0; i < dict_node->elements.size(); i++) {
				_assess_expression(dict_node->elements[i].key);
				_assess_expression(dict_node->elements[i].value);
			}
			break;
		}
		case GDScriptParser::Node::TERNARY_OPERATOR: {
			const GDScriptParser::TernaryOpNode *ternary_op_node = static_cast<const GDScriptParser::TernaryOpNode *>(p_expression);
			_assess_expression(ternary_op_node->condition);
			_assess_expression(ternary_op_node->true_expr);
			_assess_expression(ternary_op_node->false_expr);
			break;
		}
		default:
			break;
	}
}
void GDScriptEditorTranslationParserPlugin::_assess_assignment(const GDScriptParser::AssignmentNode *p_assignment) {