Is the iddah period the same after either muta ends, or divorce, if it is known that the woman cannot bear children?

Because order of shariah 3 time clean after M.C.

System for divorce 45 days after muta, and 4 month 10days after death of husband if woman pregnant iddat

If woman pregnant iddat time if her child delivery time is end of iddat may be 1 month or maybe 8 months

yes for known child and some cleaning body systems