patch 8.2.4814: possible to leave a popup window with win_gotoid()

Problem:    Possible to leave a popup window with win_gotoid().
Solution:   Give an error when trying to leave a popup window with
            win_gotoid(). (closes #10253)
diff --git a/src/evalwindow.c b/src/evalwindow.c
index 43a6d63..fd62579 100644
--- a/src/evalwindow.c
+++ b/src/evalwindow.c
@@ -817,6 +817,13 @@
 	return;
     }
 #endif
+#if defined(FEAT_PROP_POPUP) && defined(FEAT_TERMINAL)
+    if (popup_is_popup(curwin) && curbuf->b_term != NULL)
+    {
+	emsg(_(e_not_allowed_for_terminal_in_popup_window));
+	return;
+    }
+#endif
     FOR_ALL_TAB_WINDOWS(tp, wp)
 	if (wp->w_id == id)
 	{
diff --git a/src/testdir/test_terminal3.vim b/src/testdir/test_terminal3.vim
index 9b5a02f..b798e9a 100644
--- a/src/testdir/test_terminal3.vim
+++ b/src/testdir/test_terminal3.vim
@@ -528,6 +528,18 @@
   exe buf2 .. 'bwipe!'
 endfunc
 
+func Test_escape_popup_terminal()
+  set hidden
+
+  " Cannot escape a terminal popup window using win_gotoid
+  let prev_win = win_getid()
+  eval term_start('sh', #{hidden: 1, term_finish: 'close'})->popup_create({})
+  call assert_fails("call win_gotoid(" .. prev_win .. ")", 'E863:')
+
+  call popup_clear(1)
+  set hidden&
+endfunc
+
 func Test_issue_5607()
   let wincount = winnr('$')
   exe 'terminal' &shell &shellcmdflag 'exit'
diff --git a/src/version.c b/src/version.c
index 7530c1b..c1096e2 100644
--- a/src/version.c
+++ b/src/version.c
@@ -747,6 +747,8 @@
 static int included_patches[] =
 {   /* Add new patch number below this line */
 /**/
+    4814,
+/**/
     4813,
 /**/
     4812,