### 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)

bool caret_pos_dirty = false;
	bool caret_index_edit_dirty = true;
	CaretType caret_type = CaretType::CARET_TYPE_LINE;
	bool draw_caret = true;
	bool draw_caret_when_editable_disabled = false;
	bool caret_blink_enabled = false;
	Timer *caret_blink_timer = nullptr;
	bool move_caret_on_right_click = true;
	bool caret_mid_grapheme_enabled = true;
	bool multi_carets_enabled = true;
	bool drag_action = false;
	bool drag_caret_force_displayed = false;
	void _emit_caret_changed();
	void _reset_caret_blink_timer();
	void _toggle_draw_caret();
	int _get_column_x_offset_for_line(int p_char, int p_line, int p_column) const;
	
	SelectionMode selecting_mode = SelectionMode::SELECTION_MODE_NONE;
	bool selecting_enabled = true;
	bool deselect_on_focus_loss_enabled = true;
	bool drag_and_drop_selection_enabled = true;
	bool use_selected_font_color = false;
	bool selection_drag_attempt = false;
	bool dragging_selection = false;
	Timer *click_select_held = nullptr;
	uint64_t last_dblclk = 0;
	Vector2 last_dblclk_pos;
	void _click_selection_held();
	void _update_selection_mode_pointer();
	void _update_selection_mode_word();