### Godot version

v4.2.dev4.official [549fcce5f]

### System information

Windows 10

### Issue description

`scene/main/node.cpp:1757 - Parameter "p_node" is null.` when attempting to type after using find function. Does not happen in 4.2dev3.

https://github.com/godotengine/godot/assets/3820082/4a2818f7-cc3b-4b46-a0b1-5bc6a85b4abc


### Steps to reproduce

1) Open any script in the script editor
2) Ctrl+F to select some text that exists in the script
3) Hit escape to re-focus the script editor without placing the caret
4) Attempt to type



### Minimal reproduction project

[find-mrp.zip](https://github.com/godotengine/godot/files/12555561/find-mrp.zip)

x_ofs = MAX(style->get_margin(SIDE_LEFT), int(size.width - Math::ceil(style->get_margin(SIDE_RIGHT) + (text_width))));
					} else {
						x_ofs = style->get_offset().x;
					}
				} break;
				case HORIZONTAL_ALIGNMENT_CENTER: {
					if (!Math::is_zero_approx(scroll_offset)) {
						x_ofs = style->get_offset().x;
					} else {
						x_ofs = MAX(style->get_margin(SIDE_LEFT), int(size.width - (text_width)) / 2);
					}
				} break;
				case HORIZONTAL_ALIGNMENT_RIGHT: {
					if (rtl) {
						x_ofs = style->get_offset().x;
					} else {
						x_ofs = MAX(style->get_margin(SIDE_LEFT), int(size.width - Math::ceil(style->get_margin(SIDE_RIGHT) + (text_width))));
					}
				} break;
			}
			int ofs_max = width - style->get_margin(SIDE_RIGHT);
			int y_area = height - style->get_minimum_size().height;
			int y_ofs = style->get_offset().y + (y_area - text_height) / 2;
			Color selection_color = theme_cache.selection_color;
			Color font_color;
			if (is_editable()) {
				font_color = theme_cache.font_color;
			} else {
				font_color = theme_cache.font_uneditable_color;
			}