Fix bug in mixture logprob inference with `None` indices#7877

ricardoV94 merged 5 commits intopymc-devs:mainpymc-devs/pymc:mainfrom

asifzubair:asifzubair/fix-for-issue-7762asifzubair/pymc:asifzubair/fix-for-issue-7762Copy head branch name to clipboard