Issue #16089: Allow ElementTree.TreeBuilder to work again with a non-Element element_...

diff --cc Lib/xml/etree/ElementTree.py
Simple merge

diff --cc Misc/NEWS
index 490e6ed278f051797707a80d7e9e1725c46d0368,74c2004fb5cda7a9852ce30c0922e4c2735f5d04..44083e087d42d484c0e91757a323b5701a29999b
--- 1/Misc/NEWS
--- 2/Misc/NEWS
+++ b/Misc/NEWS
@@@ -39,9 -33,10 +39,12 @@@ Core and Builtin
  Library
  -------
  
+ - Issue #16089: Allow ElementTree.TreeBuilder to work again with a non-Element
+   element_factory (fixes a regression in SimpleTAL).
+ 
 +- Issue #9650: List commonly used format codes in time.strftime and
 +  time.strptime docsttings.  Original patch by Mike Hoy.
 +
  - Issue #16034: Fix performance regressions in the new `bz2.BZ2File`
    implementation.  Initial patch by Serhiy Storchaka.