patch 8.2.2541: popup_create() does not allow boolean for "cursorline"

Problem:    Popup_create() does not allow boolean for "cursorline".
Solution:   Use dict_get_bool(). (issue #7869)
diff --git a/src/testdir/test_popupwin.vim b/src/testdir/test_popupwin.vim
index 44b1800..f1a4b52 100644
--- a/src/testdir/test_popupwin.vim
+++ b/src/testdir/test_popupwin.vim
@@ -2978,6 +2978,10 @@
   call assert_equal(1, popup_getoptions(winid).cursorline)
   call popup_close(winid)
 
+  let winid = popup_create('some text', #{ cursorline: v:true, })
+  call assert_equal(1, popup_getoptions(winid).cursorline)
+  call popup_close(winid)
+
   let winid = popup_create('some text', #{ cursorline: 0, })
   call assert_equal(0, popup_getoptions(winid).cursorline)
   call popup_close(winid)
@@ -3112,6 +3116,15 @@
   call delete('XtestPopupCursorLine')
 endfunc
 
+def Test_popup_cursorline_vim9()
+  var winid = popup_create('some text', { cursorline: true, })
+  assert_equal(1, popup_getoptions(winid).cursorline)
+  popup_close(winid)
+
+  assert_fails("popup_create('some text', { cursorline: 2, })", 'E1023:')
+  popup_clear()
+enddef
+
 func Test_previewpopup()
   CheckScreendump
   CheckFeature quickfix