Fix bugs in dabbrev-expand (bug#74090)

Fix bugs in dabbrev-expand (bug#74090)

* lisp/dabbrev.el (dabbrev-expand): Use the buffer where the
expansion was found when setting the internal variables used to
determine the next expansion or a replacement expansion.

* test/lisp/dabbrev-tests.el (ert-x): Require for
'ert-with-temp-directory', 'ert-resource-directory' and
'ert-resource-file'.
(with-dabbrev-test): New macro.
(dabbrev-expand-test-same-buffer-{1,2,3,4})
(dabbrev-expand-test-other-buffer-{1,2,3,4})
(dabbrev-expand-test-minibuffer-{1,2,3,4}): New tests.

* test/lisp/dabbrev-resources/dabbrev-expand.el:
* test/lisp/dabbrev-resources/INSTALL_BEGIN: New test resources.

(cherry picked from commit f6c359cb66a0e9b851e3467b1ba9cab7efa8f744)