### Godot version

v4.0.beta14.official

### System information

Windows 11 22H2

### Issue description

There's not much to it, simply noticed that if you have Find or Find+Replace opened in the Script Editor, the Multi-Caret functionality seems to stop working -- forcibly removing all other carets after the first character is typed. I'd expect the Multi-Caret to remain until unselected by clicking elsewhere.

The content of what's in "Find" doesn't matter, it happens regardless.

https://user-images.githubusercontent.com/8159582/214234069-cbcc1681-3f09-4b10-9a90-857cc91d41a7.mp4



### Steps to reproduce

1. Open the Find or Find+Replace tool in the Script Editor _(nothing has to be inputted)_
2. Add multiple mouse cursors with Ctrl+Alt+Click **OR** highlight something and then highlight additional duplicates with Ctrl+D _(or synonymous keyboard shortcuts depending on OS)_.
3. Start typing as if going to add or replace in all locations where the multi-caret is

### Minimal reproduction project

N/A
case ScriptLanguage::CODE_COMPLETION_KIND_VARIABLE:
			tex = get_theme_icon(SNAME("Variant"), SNAME("EditorIcons"));
			break;
		case ScriptLanguage::CODE_COMPLETION_KIND_CONSTANT:
			tex = get_theme_icon(SNAME("MemberConstant"), SNAME("EditorIcons"));
			break;
		case ScriptLanguage::CODE_COMPLETION_KIND_MEMBER:
			tex = get_theme_icon(SNAME("MemberProperty"), SNAME("EditorIcons"));
			break;
		case ScriptLanguage::CODE_COMPLETION_KIND_SIGNAL:
			tex = get_theme_icon(SNAME("MemberSignal"), SNAME("EditorIcons"));
			break;
		case ScriptLanguage::CODE_COMPLETION_KIND_FUNCTION:
			tex = get_theme_icon(SNAME("MemberMethod"), SNAME("EditorIcons"));
			break;
		case ScriptLanguage::CODE_COMPLETION_KIND_PLAIN_TEXT:
			tex = get_theme_icon(SNAME("BoxMesh"), SNAME("EditorIcons"));
			break;
		default:
			tex = get_theme_icon(SNAME("String"), SNAME("EditorIcons"));
			break;
	}
	return tex;
}
void CodeTextEditor::_font_resize_timeout() {
	if (_add_font_size(font_resize_val)) {
		font_resize_val = 0;
	}
}
bool CodeTextEditor::_add_font_size(int p_delta) {