Explicitly implement pytest_assertrepr_compare in assertion plugin
Explicitly implement pytest_assertrepr_compare in assertion plugin

Previously it was an alias, which makes it unnecessary hard to find
all implementations (either by IDE or using a simple search).

nicoddemus/pytest,nicoddemus/pytest,pytest-dev/pytest,Akasurde/pytest,The-Compiler/pytest,RonnyPfannschmidt/pytest,markshao/pytest,alfredodeza/pytest,The-Compiler/pytest