[class.temporary] Clarify that list of contexts is exhaustive

Fixes NB US 19-037 (C++26 CD).

Author: eisenwave

source/basic.tex

@@ -4768,7 +4768,8 @@
 \pnum
 \indextext{initializer!temporary and declarator}%
 \indextext{temporary!order of destruction of}%
-There are several contexts in which temporaries are destroyed at a different
+There are several contexts all listed below
+in which temporaries are destroyed at a different
 point than the end of the full-expression.
 The first context is when a default constructor is called to initialize
 an element of an array with no corresponding initializer\iref{dcl.init}.