fix(updater): preserve file extension of updater package (fix: #3283) (#3285)

* fix: preserve file extension of updated package (fix: #3283)

Otherwise users may get confused when seing a sudo dialog
which suggests a `rpm` package is installed using `dpkg -i`

* pass on package extension more thoroughly

* add changes file

Update the updater package to preserve file extension, clarifying installation prompts for users.

* Apply suggestion from @hrzlgnm

* Apply suggestion from @hrzlgnm

* Apply suggestion from @Legend-Master

* More rpm and log `pkg_path` instead

---------

Co-authored-by: Tony <68118705+Legend-Master@users.noreply.github.com>
Co-authored-by: Tony <legendmastertony@gmail.com>