Extend cstrs pass to match `unless' like code

Extend cstrs pass to match `unless' like code

	* lisp/emacs-lisp/comp.el (comp-emit-assume): Add assertion.
	(comp-add-new-block-between): Fix two typos.
	(comp-add-cond-cstrs-target-block): Fix typo.
	(comp-add-cond-cstrs-simple): Logic update.
	* test/src/comp-tests.el (comp-tests-type-spec-tests): Add a test.