Fix Bug#30262

Fix Bug#30262

* lisp/net/tramp-archive.el (tramp-archive-hash): Document (changed)
layout.
(tramp-archive-dissect-file-name): Merge with
`tramp-archive-local-copy', which has been removed by this.
(tramp-archive-cleanup-hash): Adapt to changed
`tramp-archive-hash'.  (Bug#30262)

* lisp/net/tramp-gvfs.el (tramp-gvfs-unmount): Flush
connection properties.

* test/lisp/net/tramp-archive-tests.el
(tramp-archive-test01-file-name-syntax)
(tramp-archive-test02-file-name-dissect)
(tramp-archive-test16-directory-files)
(tramp-archive-test26-file-name-completion): Adapt to changed
test file.
(tramp-archive-test08-file-local-copy): Be more robust in cleanup.

* test/lisp/net/tramp-archive-resources/foo.tar.gz: Adapt to
extended test.