Amend byte-run-strip-symbol-positions so that an unexec build builds

Amend byte-run-strip-symbol-positions so that an unexec build builds

This fixes bug #54098.

* lisp/emacs-lisp/byte-run.el (byte-run--strip-list)
(byte-run--strip-vector/record): New functions.  These alter a list or
vector/record structure only where a symbol with position gets replaced by a
bare symbol.
(byte-run-strip-symbol-positions): Reformulate to use the two new functions.
(function-put): No longer strip positions from the second and third arguments.

* lisp/emacs-lisp/bytecomp.el (byte-compile-out): Remove the senseless
"stripping" of putative symbol positions from OPERAND, which is nil or a
number.