Always resize the embedded vterm properly

src/nvim/buffer.c

@@ -1249,6 +1249,10 @@ void enter_buffer(buf_T *buf)
   /* mark cursor position as being invalid */
   curwin->w_valid = 0;
 
+  if (buf->terminal) {
+    terminal_resize(buf->terminal, curwin->w_width, curwin->w_height);
+  }
+
   /* Make sure the buffer is loaded. */
   if (curbuf->b_ml.ml_mfp == NULL) {    /* need to load the file */
     /* If there is no filetype, allow for detecting one.  Esp. useful for