Test was introduced with rPWBC92ad39a due to T348422 months ago but now it fails. Seems there are no pages found without 'mediainfo' wohtin the first 5 pages
```
D:\pwb\GIT\core>py -3.11 -m pwb file_tests -v TestFilePageDataItem.test_data_item_when_file_exist_but_without_item
tests: max_retries reduced from 15 to 3
test_data_item_when_file_exist_but_without_item (__main__.TestFilePageDataItem.test_data_item_when_file_exist_but_without_item)
Test if data item is missing from file. ... ERROR
======================================================================
ERROR: test_data_item_when_file_exist_but_without_item (__main__.TestFilePageDataItem.test_data_item_when_file_exist_but_without_item)
Test if data item is missing from file.
----------------------------------------------------------------------
Traceback (most recent call last):
File "D:\pwb\GIT\core\tests\file_tests.py", line 429, in test_data_item_when_file_exist_but_without_item
item = page.data_item()
^^^^
UnboundLocalError: cannot access local variable 'page' where it is not associated with a value
----------------------------------------------------------------------
Ran 1 test in 3.059s
FAILED (errors=1)
```