fix(platform-aws): fill all platform values

[aws-nslick]

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fix(platform-aws): fill all platform values

commit ce214aa rearranged fields such that the written initializers were valid on most modern compilers, but it went unnoticed that this is insufficient for AL2's ancient toolchain, which fails with:

sorry, unimplemented: non-trivial designated initializers not supported

provide all members for all entries to fix this.