BF: status - report annexed files even if no bytesize known

Inspired by a fix we needed for push:
datalad#7049

I looked into status to realize that we do not even consider those files
for which git-annex would not report bytesize.  This commit makes them
considered in count but would assume 0 bytesize for "recorded" etc.

It would not address the issue that we would still not
consider/interrogate sizes for those files even if their content
available:

	$> datalad status --annex=all
	2 annex'd files (0.0 B/0.0 B present/total size)

	$> ls -lL *
	-r-------- 1 yoh yoh   0 Sep 20 15:52 123.dat
	-r-------- 1 yoh yoh 723 Sep 20 15:57 sample3.csv

where sample3.csv is the relaxed one.

datalad/core/local/status.py

@@ -461,10 +461,10 @@ def custom_result_summary_renderer(results):  # pragma: more cover
         # fish out sizes of annexed files. those will only be present
         # with --annex ...
         annexed = [
-            (int(r['bytesize']), r.get('has_content', None))
+            (int(r.get('bytesize', 0)), r.get('has_content', None))
             for r in results
             if r.get('action', None) == 'status' \
-            and 'key' in r and 'bytesize' in r]
+            and 'key' in r]
         if annexed:
             have_availability = any(a[1] is not None for a in annexed)
             total_size = bytes2human(sum(a[0] for a in annexed))