Don't filter "<...>" in code paragraphs or inline code in markdown posted to issues, issue comments and PR descriptions

Generated markdown in safe outputs gets heavily filtered/redacted. THere are good reasons for this

However one major problem is the redaction of `` --> `(Abc)` in code blocks (inline and paragraph) in issue, issue comments, PR descriptions etc. This is too strong - it's OK to remove these in regular markdown but not formatted code.

If necessary we should try to use a good quality markdown parser to help guide this process - parse the markdown, then filter the actual text sections but be less aggressive on the code filtering.

Some code filtering should still stay in place e.g. URLs. It's just the `` --> `(Abc)` that's too strong at the moment. But we should do an assessment of the filtering rules implemented, compare to what's documented, and decide