interior and trunk lights circuits is Fuse 21. But if blown, trunk light and general interior lights (rear reading map lights keep working) should never go on. May be you are getting ONLY reading map lights on when operating door lever or the key.
If this is not the case an behavior is just as you described, then you have all the 5 door jam switches stuck (or frozen), can not believe this though!!
Would say check Fuse 21. If blown, be careful as your trunk harness may be damaged causing the fuse to blow. See archives.
Javier