Bug: define_build_option function has logic error in native.alias

[ELundby45]

Summary

The define_build_option function in ynnpack/build_defs.bzl has a logic error in the native.alias definition (around line 33-41).

Issue

When the explicit_false condition is selected, the alias incorrectly points to ":" + explicit_true instead of ":" + explicit_false:

native.alias(
    name = name,
    actual = select({
        explicit_true: ":" + explicit_true,
        explicit_false: ":" + explicit_true,  # ← BUG: should be explicit_false
        "//conditions:default": ":" + default,
    }),
)