Merge #18013: Fix cgi.FieldStorage to parse the W3C sample form.

diff --cc Lib/cgi.py
Simple merge

diff --cc Misc/NEWS
index 13694f5bf71e4c40408fa0bc1109841165419f89,b0bc75f2989cabe6d32b6eaa4b41e6c108eeb8e3..d8a4ba0c022175c4b2929f02d53eba71c1e7926d
--- 1/Misc/NEWS
--- 2/Misc/NEWS
+++ b/Misc/NEWS
@@@ -142,9 -41,8 +142,11 @@@ Core and Builtin
  Library
  -------
  
+ - Issue #18013: Fix cgi.FieldStorage to parse the W3C sample form.
+ 
 +- Issue #18020: improve html.escape speed by an order of magnitude.
 +  Patch by Matt Bryant.
 +
  - Issue #18347: ElementTree's html serializer now preserves the case of
    closing tags.