Chore: Fix bugs in the test suite (#14244)

* Fix: redirect SHARE_LINK_BUNDLE_DIR to the test temp layout instead of the real media directory

* Fix: include f_to in test_filters subTest labels so each of the 8 cases reports distinctly

* Fix: run the post_consume error-log assertion after the raising call and match the actual paperless_mail logger name

* Fix: rename the blank-password workflow test to match its behavior and add a real wrong-password-fails test

* Fix: use the created social account's actual pk and remove an accidental tuple wrapping the mock provider

* Fix: assert against the created documents' actual pks instead of hardcoded 1 and 2

* Fix: assert test_compression actually produces a valid LZMA-compressed zip

* Fix: clear os.environ when patching PAPERLESS_ADMIN_* vars so a host-set value can't leak into the no-user test

* Fix: restore MIDDLEWARE, AUTHENTICATION_BACKENDS and REST_FRAMEWORK auth classes after each remote-user settings test instead of leaking the mutation into later tests

* Fix: use a guaranteed-nonexistent temp path instead of hardcoded /tmp/foo/bar in test_export_target_not_exists

src/documents/tests/test_management_superuser.py

@@ -14,7 +14,7 @@ from paperless_testing.dirs import DirectoriesMixin
 class TestManageSuperUser(DirectoriesMixin, TestCase):
     def call_command(self, environ):
         out = StringIO()
-        with mock.patch.dict(os.environ, environ):
+        with mock.patch.dict(os.environ, environ, clear=True):
             call_command(
                 "manage_superuser",
                 "--no-color",