fix the hash code issue of PrCheckerSummary handlers
This MR resolves the hash code issue appears in "PrCheckerSummary" and "PrCheckerSummary_withoutUT" handlers. Hash codes appears in the input files of these handlers and are found to be unstable, leading the disappearance of efficiency plots dashboards. It's solved by first open the input file and get the hash code, then pass the right path(with hash code) to the main function of the handler.