Count individual puzzles as unsolved in Multi-Blind accidents (#977)

* Add Guideline H1d+++

* Improve wording to make it clearer

Co-authored-by: Lucas Garron <code@garron.net>

* Move changes from Guidelines to Regulations

Co-authored-by: Lucas Garron <code@garron.net>

wca-regulations.md

@@ -514,3 +514,4 @@ Note: Because Article and Regulation numbers are not reassigned when Regulations
     - H1b) If a competitor is attempting fewer than 6 puzzles, they are allotted a time limit of 10 minutes times the number of puzzles in the attempt, else the time limit is 60 minutes.
         - H1b1) The competitor may signal the end of the solve at any time. If and when the time limit is reached, the judge stops the attempt and the attempt is then scored; the time limit for the attempt counts as the original recorded time.
     - H1d) Time penalties for the puzzles of the attempt are cumulative.
+    - H1e) If a competitor accidentally applies any moves to one or more puzzles during the memorization phase, those puzzles may be considered unsolved at the end of the attempt (instead of immediately disqualifying the entire attempt), at the discretion of the WCA Delegate.