### Godot version

4.0 stable

### System information

Manjaro Linux, kernel 6.1.1-1-MANJARO, AMD Ryzen 5 3600, AMD RX 580

### Issue description

The `wrap_mode` property of the `TextEdit` node doesn't seem to really do anything. Setting it to `LINE_WRAPPING_BOUNDARY` simply means that there won't be an horizontal scrollbar if the text overshoots the boundary, instead of actually forcing the text to the next line so that it stays visible.

### Steps to reproduce

Create a TextEdit node and set its `wrap_mode` property to `LINE_WRAPPING_BOUNDARY`

### Minimal reproduction project

[WrapBugDemo.zip](https://github.com/godotengine/godot/files/10875969/WrapBugDemo.zip)

MENU_INSERT_RLO,
		MENU_INSERT_PDF,
		MENU_INSERT_ALM,
		MENU_INSERT_LRI,
		MENU_INSERT_RLI,
		MENU_INSERT_FSI,
		MENU_INSERT_PDI,
		MENU_INSERT_ZWJ,
		MENU_INSERT_ZWNJ,
		MENU_INSERT_WJ,
		MENU_INSERT_SHY,
		MENU_MAX
	};
	
	enum SearchFlags {
		SEARCH_MATCH_CASE = 1,
		SEARCH_WHOLE_WORDS = 2,
		SEARCH_BACKWARDS = 4
	};
private:
	struct GutterInfo {
		GutterType type = GutterType::GUTTER_TYPE_STRING;
		String name = "";
		int width = 24;
		bool draw = true;
		bool clickable = false;
		bool overwritable = false;
		Callable custom_draw_callback;
	};
	class Text {