### Godot version

v4.0.beta10.official [d0398f62f]

### System information

Windows 22H2, Compatibility, GeForce GTX 550 Ti

### Issue description

Multiple lines of error messages are copied without line breaks:
The script editor's error panel shows:
```
Line 6:Expected parameter name.
Line 6:Expected closing ")" after function parameters.
Line 6:Expected ":" after function declaration.
```
But selecting and copying them `ctrl c`, copies them without line breaks:
```
Line 6:Expected parameter name.Line 6:Expected closing ")" after function parameters.Line 6:Expected ":" after function declaration.
```


### Steps to reproduce

- start Godot
- open the attached project
- open the script `Node2D.gd`
The status bar shows an error message.
- click on the red circle with an x in it, and the number 3 to the right of the circle.
The script editor's error panel shows three messages:
>Line 6:Expected parameter name.
Line 6:Expected closing ")" after function parameters.
Line 6:Expected ":" after function declaration.

- select all three lines, and copy them `ctrl c`
- in the script editor, click on the empty line 12 to place the cursor there.
- paste `ctrl v`

### Expected
The copied lines should be pasted on three lines, as they appeared in the error panel.

### Observed
There are no line breaks, they appear on the same line:
```
Line 6:Expected parameter name.Line 6:Expected closing ")" after function parameters.Line 6:Expected ":" after function declaration.
```


### Minimal reproduction project

[issue, error messages copied without line breaks.zip](https://github.com/godotengine/godot/files/10361376/issue.error.messages.copied.without.line.breaks.zip)

}
				}
				emit_signal(SNAME("go_to_help"), "class_method:" + result.class_name + ":" + result.class_member);
			} break;
			case ScriptLanguage::LOOKUP_RESULT_CLASS_SIGNAL: {
				StringName cname = result.class_name;
				while (true) {
					if (ClassDB::has_signal(cname, result.class_member)) {
						result.class_name = cname;
						cname = ClassDB::get_parent_class(cname);
					} else {
						break;
					}
				}
				emit_signal(SNAME("go_to_help"), "class_signal:" + result.class_name + ":" + result.class_member);
			} break;
			case ScriptLanguage::LOOKUP_RESULT_CLASS_ENUM: {
				StringName cname = result.class_name;
				StringName success;
				while (true) {
					success = ClassDB::get_integer_constant_enum(cname, result.class_member, true);
					if (success != StringName()) {
						result.class_name = cname;
						cname = ClassDB::get_parent_class(cname);
					} else {
						break;
					}
				}
				emit_signal(SNAME("go_to_help"), "class_enum:" + result.class_name + ":" + result.class_member);
			} break;