Introduced new tests to verify inline anchor generation within definition lists and indented code blocks. Ensures proper HTML output and validates parsing behavior to prevent future regressions.

This removes indented code support from our parsers.

The problem was that during our minimal parse phase anchors that lived in indented code (lists/definition lists) was not discovered because they were marked as part of an indented code block.

Removing support for indented code blocks since all code should be included through fenced blocks.