Starting a list within double block quotes adds extra spacing (Markdown)

[jackdewinter]

spawned from #852 . This was opened due to an old "fix" that was causing bad tokenization to occur. When removed to resolve #852 , created this ticket to track the proper fixing of this. The paragraph within the list has 2 extra spaces added after the newline.

• test_nested_three_block_nl_block_skip_nl_ordered_no_bq1_drop_ordered_x
• test_nested_three_block_nl_block_skip_nl_ordered_no_bq1_drop_ordered_block
• test_nested_three_block_nl_block_skip_nl_ordered_no_bq2_drop_ordered_x
• test_nested_three_block_text_nl_block_skip_text_nl_ordered_no_bq1_drop_ordered_x
• test_nested_three_block_text_nl_block_skip_text_nl_ordered_no_bq2_drop_ordered_x

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Expected
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-->> abc\n> > def\n>   1. list\n>   item<--
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Actual
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-->> abc\n> > def\n>   1. list\n>     item<--
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