### 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)

MessageQueue::get_singleton()->flush();
			SIGNAL_DISCARD("text_set");
			SIGNAL_DISCARD("text_changed");
			SIGNAL_DISCARD("lines_edited_from");
			SIGNAL_DISCARD("caret_changed");
			ERR_PRINT_OFF;
			text_edit->cut();
			MessageQueue::get_singleton()->flush();
			ERR_PRINT_ON; 
			((Array)lines_edited_args[0])[0] = 1;
			CHECK(text_edit->get_text() == "some\n");
			CHECK(text_edit->get_caret_line() == 0);
			CHECK(text_edit->get_caret_column() == 4);
			SIGNAL_CHECK("caret_changed", empty_signal_args);
			SIGNAL_CHECK("text_changed", empty_signal_args);
			SIGNAL_CHECK("lines_edited_from", lines_edited_args);
			((Array)lines_edited_args[0])[0] = 0;
			((Array)lines_edited_args[0])[1] = 1;
			text_edit->undo();
			MessageQueue::get_singleton()->flush();
			CHECK(text_edit->get_text() == "this is\nsome\n");
			CHECK(text_edit->get_caret_line() == 0);
			CHECK(text_edit->get_caret_column() == 6);
			SIGNAL_CHECK("caret_changed", empty_signal_args);
			SIGNAL_CHECK("text_changed", empty_signal_args);
			SIGNAL_CHECK("lines_edited_from", lines_edited_args);
			((Array)lines_edited_args[0])[0] = 1;
			((Array)lines_edited_args[0])[1] = 0;
			text_edit->redo();
			MessageQueue::get_singleton()->flush();