### Godot version

v4.1.stable.official [970459615]

### System information

Godot v4.1.stable - Windows 10.0.22621 - Vulkan (Forward+) - dedicated NVIDIA GeForce MX330 (NVIDIA; 30.0.15.1169) - 11th Gen Intel(R) Core(TM) i5-1135G7 @ 2.40GHz (8 Threads)

### Issue description

Calling `RichTextLabel`'s `select_all` method has no visual indicator, but it must have one. 

### Steps to reproduce

- Add `RichTextLabel` node
- Set `selection_enabled` value to be `true`
- Call `$RichTextLabel.select_all() `method in `_ready`

### Minimal reproduction project

[RichTextLabel_bug.zip](https://github.com/godotengine/godot/files/12098913/RichTextLabel_bug.zip)

push_cell();
			pos = brk_end + 1;
			tag_stack.push_front("cell");
		} else if (tag.begins_with("cell ")) {
			Vector<String> subtag = tag.substr(5, tag.length()).split(" ");
			_normalize_subtags(subtag);
			for (int i = 0; i < subtag.size(); i++) {
				Vector<String> subtag_a = subtag[i].split("=");
				_normalize_subtags(subtag_a);
				if (subtag_a.size() == 2) {
					if (subtag_a[0] == "expand") {
						int ratio = subtag_a[1].to_int();
						if (ratio < 1) {
							ratio = 1;
						}
						set_table_column_expand(get_current_table_column(), true, ratio);
					}
				}
			}
			push_cell();
			const Color fallback_color = Color(0, 0, 0, 0);
			for (int i = 0; i < subtag.size(); i++) {
				Vector<String> subtag_a = subtag[i].split("=");
				_normalize_subtags(subtag_a);
				if (subtag_a.size() == 2) {
					if (subtag_a[0] == "border") {
						Color color = Color::from_string(subtag_a[1], fallback_color);
						set_cell_border_color(color);
					} else if (subtag_a[0] == "bg") {
						Vector<String> subtag_b = subtag_a[1].split(",");