Declare default outputs from nogo_stdlib
Declare default outputs from nogo_stdlib

nogo_stdlib propogate facts and findings to downstream nogo_aspects via
NogoStdlibInfo. This all works fine except one case: directly building a
nogo_stdlib. e.g., bazel build //tools/nogo:stdlib.

In this case, nothing is requesting the NogoStdlibInfo, and thus the target has
nothing to do. This can be rather confusing when trying to debug failures in
:stdlib, as building :stdlib does nothing.

Fix this by declaring the facts and findings as default outputs from
nogo_stdlib. Now direct bazel build will request these outputs and actually
trigger the analysis. Standard aspect builds are unaffected.

PiperOrigin-RevId: 391580126

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