### Godot version

4.0.2

### System information

Windows 11

### Issue description

Double clicking on `$MyNode` in the script editor will select the whole name including the "$".

But double clicking on `%MyNode` (unique name) will select the name but will not include the "%".

Dragging a node from the scene tree into the script editor brings up the property/method hint list, even though a "." has not been typed. Pressing enter appends "new()" even though this makes no sense as there is no period so it is just appending it directly to the node name: `$MyNodenew()`


### Steps to reproduce

Type `%MyNode` in a script and double click on it.

Type `@onready var x =` in a script, drag a node from the scene tree, then press enter.


### Minimal reproduction project

N/A
}
		ignored = ignored && (kind == ScriptLanguage::CODE_COMPLETION_KIND_FILE_PATH || kind == ScriptLanguage::CODE_COMPLETION_KIND_NODE_PATH || kind == ScriptLanguage::CODE_COMPLETION_KIND_SIGNAL);
	}
	if (ignored) {
		return;
	}
	if (p_force) {
		emit_signal(SNAME("code_completion_requested"));
		return;
	}
	String line = get_line(get_caret_line());
	int ofs = CLAMP(get_caret_column(), 0, line.length());
	if (ofs > 0 && (is_in_string(get_caret_line(), ofs) != -1 || !is_symbol(line[ofs - 1]) || code_completion_prefixes.has(line[ofs - 1]))) {
		emit_signal(SNAME("code_completion_requested"));
	} else if (ofs > 1 && line[ofs - 1] == ' ' && code_completion_prefixes.has(line[ofs - 2])) {
		emit_signal(SNAME("code_completion_requested"));
	}
}
void CodeEdit::add_code_completion_option(CodeCompletionKind p_type, const String &p_display_text, const String &p_insert_text, const Color &p_text_color, const Ref<Resource> &p_icon, const Variant &p_value, int p_location) {
	ScriptLanguage::CodeCompletionOption completion_option;
	completion_option.kind = (ScriptLanguage::CodeCompletionKind)p_type;
	completion_option.display = p_display_text;
	completion_option.insert_text = p_insert_text;
	completion_option.font_color = p_text_color;
	completion_option.icon = p_icon;
	completion_option.default_value = p_value;
	completion_option.location = p_location;
	code_completion_option_submitted.push_back(completion_option);
}
void CodeEdit::update_code_completion_options(bool p_forced) {