[clang-tools-extra] [clang-tidy] cppcoreguidelines-owning-memory: support new expressions through implicit casts (PR #189544)

[Baranov Victor via cfe-commits]

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vbvictor wrote:

Do we still need plain `CreatesOwner` somewhere?
If not, can we instead place `ignoringImpCasts()` here and don't add new variable `CreatesOwnerWithCasts`

https://github.com/llvm/llvm-project/pull/189544