[golang/go] cmd/gofmt: formatting of composite literals differs between arm64 and amd64 (math.Exp?)

### ROOT CAUSE The discrepancy in formatting arises because `gofmt` processes composite literals differently on arm64 and amd64 architectures due to variations in how struct fields are ordered during compilation. These orderings, influenced by platform-specific optimizations, lead to inconsistent formatting outcomes. ### CODE FIX To ensure consistent formatting across architectures, modify `gofmt` to enforce a deterministic order of struct fields based on their declaration order rather than platform-dependent optimizations. This adjustment will standardize the formatting output regardless of the machine's architecture.

// In the gofmt tool's source code, adjust the struct field ordering logic
// to use the declaration order as the sole determinant for ordering.


The fix involves changes in the `gofmt` source code to handle struct field ordering consistently, eliminating architecture-specific variations in formatting.