[CRITICAL] Django UpdateQuery doesn't apply SafeDelete filter

[iamhssingh]

Problem Statement

When running Model.objects.update(), safe delete filter is not applied.

Reason

In case of .update (Ref: Django repo), the SafeDelete query class is replaced by UpdateQuery during query chain.

Exact line which replaces the class

So when get_compiler is called, SafeDeleteQuery.get_compiler is not called. (Introduced in #160 )