change many wrappers to be consistent with finding input files. Errors are now thrown when any input file is not found, checking other input types even when another input was not found. This increased errors reported in unit tests, so updated tests to reflect this.

change many wrappers to be consistent with finding input files. Errors are now thrown when any input file is not found, checking other input types even when another input was not found. This increased errors reported in unit tests, so updated tests to reflect this. #5203