Fix the crash of deallocate caused by delete array error on storeInjectionConfig()

Root cause: Because mInjectionConfig is plain old data, it's not get
initialized to 0. In this case, if we use the delete[] method to
delete mInjectionConfig.streams, a deallocation crash may occur.

Solution: A new vector member variable is added to store the stream
of the internal camera, replacing the original new/delete[] method
for storing the stream to avoid another deallocation crash caused by
uninitialized mInjectionConfig.

Bug: 194700088
Test: Manual
Change-Id: Ic3d825fce7b6fefea65e7ce27072ed32f275d4bb