[webgpu] Use multiplication instead of pow if exponent is 2 · microsoft/onnxruntime@d7ca50b

Build: RelWithDebInfo/_deps/protobuf-src/src/google/protobuf/extension_set_inl.h#L220

'=': conversion from 'uint64_t' to 'uint32_t', possible loss of data

Build: RelWithDebInfo/_deps/protobuf-src/src/google/protobuf/extension_set_inl.h#L147

'initializing': conversion from 'uint64_t' to 'int', possible loss of data

Build: RelWithDebInfo/_deps/protobuf-src/src/google/protobuf/extension_set_inl.h#L119

'argument': conversion from 'uint64_t' to 'uint32_t', possible loss of data

Build: RelWithDebInfo/_deps/protobuf-src/src/google/protobuf/extension_set_inl.h#L100

'argument': conversion from 'uint64_t' to 'uint32_t', possible loss of data

Build: RelWithDebInfo/_deps/protobuf-src/src/google/protobuf/extension_set_inl.h#L98

'argument': conversion from 'uint64_t' to 'int32_t', possible loss of data

Build: RelWithDebInfo/_deps/protobuf-src/src/google/protobuf/extension_set.cc#L1939

'argument': conversion from 'size_t' to 'uint32_t', possible loss of data

Build: RelWithDebInfo/_deps/protobuf-src/src/google/protobuf/extension_set.cc#L1472

'argument': conversion from 'size_t' to 'uint32_t', possible loss of data

Build: RelWithDebInfo/_deps/protobuf-src/src/google/protobuf/extension_set.cc#L1404

'argument': conversion from 'size_t' to 'uint32_t', possible loss of data

Build: RelWithDebInfo/_deps/protobuf-src/src/google/protobuf/extension_set.cc#L1241

'argument': conversion from 'uint64_t' to 'uint32_t', possible loss of data

Build: RelWithDebInfo/_deps/protobuf-src/src/google/protobuf/extension_set.cc#L1235

'initializing': conversion from 'uint64_t' to 'int', possible loss of data

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