[BitcodeReader] Fix asserts when we read a non-vector type for insert/extract/shuffle

Added some additional checking for vector types + tests.

Bug found with AFL fuzz.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@235710 91177308-0d34-0410-b5e6-96231b3b80d8
5 files changed