### 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)

CHECK(text_edit->get_caret_column() == 5);
			SEND_GUI_MOUSE_BUTTON_EVENT(text_edit->get_pos_at_line_column(0, 9), MouseButton::LEFT, MouseButtonMask::LEFT, Key::NONE);
			CHECK_FALSE(text_edit->has_selection());
			text_edit->set_selecting_enabled(false);
			SEND_GUI_MOUSE_BUTTON_EVENT(text_edit->get_pos_at_line_column(0, 0), MouseButton::LEFT, MouseButtonMask::LEFT, Key::NONE);
			SEND_GUI_MOUSE_BUTTON_EVENT(text_edit->get_pos_at_line_column(0, 7), MouseButton::LEFT, MouseButtonMask::LEFT, Key::NONE | KeyModifierMask::SHIFT);
			CHECK_FALSE(text_edit->has_selection());
			CHECK(text_edit->get_caret_line() == 1);
			CHECK(text_edit->get_caret_column() == 5);
			text_edit->set_selecting_enabled(true);
		}
		SUBCASE("[TextEdit] select and deselect") {
			text_edit->set_text("this is some text\nfor selection");
			MessageQueue::get_singleton()->flush();
			text_edit->select(-1, -1, 500, 500);
			CHECK(text_edit->has_selection());
			CHECK(text_edit->get_selected_text() == "this is some text\nfor selection");
			text_edit->deselect();
			CHECK_FALSE(text_edit->has_selection());
			text_edit->select(500, 500, -1, -1);
			CHECK(text_edit->has_selection());
			CHECK(text_edit->get_selected_text() == "this is some text\nfor selection");
			text_edit->deselect();
			CHECK_FALSE(text_edit->has_selection());
			text_edit->select(0, 4, 0, 8);
			CHECK(text_edit->has_selection());
			CHECK(text_edit->get_selected_text() == " is ");
			text_edit->deselect();
			CHECK_FALSE(text_edit->has_selection());
			text_edit->select(0, 8, 0, 4);