Misc strict_types fixes

_tests/tests/async_tests/_third_party_code.php

_tests/tests/async_tests/basic_code_formatting.php

_tests/tests/async_tests/file_naming.php

_tests/tests/cli_tests/_resource_closing.php

_tests/tests/sync_tests/__blob_slowdown.php

_tests/tests/sync_tests/__debrand_epic.php

_tests/tests/sync_tests/__lang_spelling_epic.php

_tests/tests/sync_tests/_cqc_nonbundled.php

_tests/tests/sync_tests/_lang_no_unused.php

_tests/tests/sync_tests/override_issues.php

_tests/tests/sync_tests/override_notes_consistency.php

_tests/tests/sync_tests/path_references.php

_tests/tests/sync_tests/phpdoc.php

adminzone/pages/modules_custom/admin_workflow.php

data/guids.bin

line_count.php

pages/modules/join.php

sources/files.php

sources/global.php

sources/hooks/systems/addon_registry/core_cleanup_tools.php