### 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)

alignment |= INLINE_ALIGNMENT_TO_BASELINE;
				} else if (subtag[2] == "bottom" || subtag[2] == "b") {
					alignment |= INLINE_ALIGNMENT_TO_BOTTOM;
				}
			} else if (subtag.size() > 1) {
				if (subtag[1] == "top" || subtag[1] == "t") {
					alignment = INLINE_ALIGNMENT_TOP;
				} else if (subtag[1] == "center" || subtag[1] == "c") {
					alignment = INLINE_ALIGNMENT_CENTER;
				} else if (subtag[1] == "bottom" || subtag[1] == "b") {
					alignment = INLINE_ALIGNMENT_BOTTOM;
				}
			}
			int row = -1;
			if (subtag.size() > 3) {
				row = subtag[3].to_int();
			}
			push_table(columns, (InlineAlignment)alignment, row);
			pos = brk_end + 1;
			tag_stack.push_front("table");
		} else if (tag == "cell") {
			push_cell();
			pos = brk_end + 1;
			tag_stack.push_front(tag);
		} else if (tag.begins_with("cell=")) {
			int ratio = tag.substr(5, tag.length()).to_int();
			if (ratio < 1) {
				ratio = 1;
			}
			set_table_column_expand(get_current_table_column(), true, ratio);