### 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)

return true;
}
void LineEdit::menu_option(int p_option) {
	switch (p_option) {
		case MENU_CUT: {
			if (editable) {
				cut_text();
			}
		} break;
		case MENU_COPY: {
			copy_text();
		} break;
		case MENU_PASTE: {
			if (editable) {
				paste_text();
			}
		} break;
		case MENU_CLEAR: {
			if (editable) {
				clear();
			}
		} break;