[BUG] MajorityVote() doesn't return what expected

### Observed behavior MajorityVote() doesn't return the result of the most workers. ### Expected behavior MajorityVote() to return the result of the most workers. ### Python Version 3.11 ### Crowd-Kit Version 1.2.1 ### Other Packages Versions _No response_ ### Example code ```Python mv = MajorityVote() resultmv = mv.fit_predict(df_crowd) ``` ### Relevant log output _No response_