fix(#34076):replace assgniee translation key (#34077)

Fix the typo on the `filter_assginee_no_assigne` key used in
translations.

The typo itself doesn't produce a bug (as it's there both on the code
and on the locales)

Side Note: Github UI is not the best to bulk change this :/ Squashing
commits on the PR should be adequate.

Closes #34076 .

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Co-authored-by: Lunny Xiao <xiaolunwen@gmail.com>

options/locale/locale_en-US.ini

@@ -1551,7 +1551,7 @@ issues.filter_project = Project
 issues.filter_project_all = All projects
 issues.filter_project_none = No project
 issues.filter_assignee = Assignee
-issues.filter_assginee_no_assignee = Assigned to nobody
+issues.filter_assignee_no_assignee = Assigned to nobody
 issues.filter_assignee_any_assignee = Assigned to anybody
 issues.filter_poster = Author
 issues.filter_user_placeholder = Search users