Exclusion by group in segment is not working correctly for all the experiments

[VivekFitkariwala]

Describe the bug

When the user gets excluded due to groups in the segments the exclusion documents are not getting created properly.

Currently, we are creating a group exclusion document for all the experiment types that don't make sense for Individual and within-subject experiments. For group experiments, this document should only be created if the experiment.group is the same as the group type because of which the user is excluded. Else only an individual exclusion document should be created for the user.

To summarise
Individual/Within-subject experiment

• Only individual exclusion documents should be created.

Group Experiment

• Individual Exclusion documents should be created.
• A group Exclusion document should be created only if the experiment group is the same as the segment's group because of which the user got excluded

[bcb37]

QA: @ppratikcr7 See my comment on the other issue