### 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
start_action(EditAction::ACTION_TYPING);
	Vector<int> caret_edit_order = get_caret_index_edit_order();
	for (const int &i : caret_edit_order) {
		if (p_caret != -1 && p_caret != i) {
			continue;
		}
		bool had_selection = has_selection(i);
		String selection_text = (had_selection ? get_selected_text(i) : "");
		if (had_selection) {
			delete_selection(i);
		}
		
		if (is_overtype_mode_enabled() && !had_selection) {
			
			if (get_caret_column(i) < get_line(get_caret_line(i)).length()) {
				remove_text(get_caret_line(i), get_caret_column(i), get_caret_line(i), get_caret_column(i) + 1);
			}
		}
		const char32_t chr[2] = { (char32_t)p_unicode, 0 };
		if (auto_brace_completion_enabled) {
			int cl = get_caret_line(i);
			int cc = get_caret_column(i);
			if (had_selection) {
				insert_text_at_caret(chr, i);
				String close_key = get_auto_brace_completion_close_key(chr);
				if (!close_key.is_empty()) {