* lisp/emacs-lisp/bytecomp.el (byte-compile-out-toplevel): Fix bug#34757

* lisp/emacs-lisp/bytecomp.el (byte-compile-out-toplevel): Fix bug#34757

This fix was provided by Pip Cet <pipcet@gmail.com>.  It tightens the
code that tries to recognize a bytecode sequence as being a simple
function call (to then decompile it), which occasionally misfired.

I added some minor changes found while investigating this issue.

(byte-compile): Handle corner case where byte-compile-top-level returns
a non-self-evaluating expression.
(byte-compile-out-toplevel): Remove support for `progn` and `t` values
of output-type which aren't used anywhere.