[basic.life] Change "complete const object" to "const, complete object" (#5818)

"Complete object" is a defined term (https://eel.is/c++draft/basic#def:complete_object).
Putting "const" in the middle of that leaves it ambiguous whether we are referring to
a const-qualified "complete object", or to a complete const object with some other meaning
of "complete" (such as "with a complete type").

Author: RedBeard0531

source/basic.tex

@@ -3516,7 +3516,7 @@
 \item $o_1$ and $o_2$ are of the same type
 (ignoring the top-level cv-qualifiers), and
 
-\item $o_1$ is not a complete const object, and
+\item $o_1$ is not a const, complete object, and
 
 \item neither $o_1$ nor $o_2$
 is a potentially-overlapping subobject\iref{intro.object}, and
@@ -3587,7 +3587,7 @@
 \end{example}
 
 \pnum
-Creating a new object within the storage that a const complete
+Creating a new object within the storage that a const, complete
 object with static, thread, or automatic storage duration occupies,
 or within the storage that such a const object used to occupy before
 its lifetime ended, results in undefined behavior.