Fix a bug in image generation due to default conflict methods. There were inconsistencies in HasCodeItem/IsInvokable which lead to the default conflict ArtMethod pointing to arbitrary data. Test: 845-data-image Bug: 290519059 (cherry picked from https://android-review.googlesource.com/q/commit:e5a09b184db65ab5802824e0102f7a42f3d9b184) Merged-In: I980c3fdac0ebf29474b166d0acfe27eef1d566c8 Change-Id: I980c3fdac0ebf29474b166d0acfe27eef1d566c8