### 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
if (GDVIRTUAL_CALL(_request_code_completion, p_force)) {
		return;
	}
	
	bool ignored = code_completion_active && !code_completion_options.is_empty();
	if (ignored) {
		ScriptLanguage::CodeCompletionKind kind = ScriptLanguage::CODE_COMPLETION_KIND_PLAIN_TEXT;
		const ScriptLanguage::CodeCompletionOption *previous_option = nullptr;
		for (int i = 0; i < code_completion_options.size(); i++) {
			const ScriptLanguage::CodeCompletionOption &current_option = code_completion_options[i];
			if (!previous_option) {
				previous_option = &current_option;
				kind = current_option.kind;
			}
			if (previous_option->kind != current_option.kind) {
				ignored = false;
				break;
			}