TfLite fix some inconsistent usage of std/absl::variant/any_cast
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Fix using std::any_cast instead of absl::any_cast

Inconsistencies exist in Lite repo using std::variant/absl::variant and std::any_cast/absl::any_cast.  When abseil is built with ABSL_USES_STD_ANY (Linux), everything works even with this bug. But if not (on Windows build), this uses std::any_cast on variable created by absl::variant, causing a throwing of exception at runtime.
