feat: add frontend for locked workspaces (#8655)

- Fix workspaces query for locked workspaces.

coderd/database/queries/workspaces.sql

@@ -259,6 +259,14 @@ WHERE
 			) > 0
 		ELSE true
 	END
+	-- Filter by locked workspaces. By default we do not return locked
+	-- workspaces since they are considered soft-deleted.
+	AND CASE
+		WHEN @locked_at :: timestamptz > '0001-01-01 00:00:00+00'::timestamptz THEN
+			locked_at IS NOT NULL AND locked_at >= @locked_at
+		ELSE
+			locked_at IS NULL
+	END
 	-- Authorize Filter clause will be injected below in GetAuthorizedWorkspaces
 	-- @authorize_filter
 ORDER BY
@@ -474,7 +482,7 @@ WHERE
 		)
 	) AND workspaces.deleted = 'false';
 
--- name: UpdateWorkspaceLockedDeletingAt :exec
+-- name: UpdateWorkspaceLockedDeletingAt :one
 UPDATE
 	workspaces
 SET
@@ -490,7 +498,8 @@ FROM
 WHERE
 	workspaces.template_id = templates.id
 AND
-	workspaces.id = $1;
+	workspaces.id = $1
+RETURNING workspaces.*;
 
 -- name: UpdateWorkspacesDeletingAtByTemplateID :exec
 UPDATE