[6.2][cxx-interop] Handle vector types in escapability analysis
Explanation: Whenever we have a vector type, the escpability depends on the
escapability of the element type. This will enable us to consider more type
like std::vector<simd::float3> as safe by default.
Issues: rdar://157141552
Original PRs: #83542
Risk: Low, narrow fix.
Testing: Added a compiler test.
Reviewers: @egorzhdan