Fix Autoloads skyframe injection

Before this, changing the value of `--enable_bzlmod` did not invalidate the existing skyframe precomputed value as the instances were considered the same/equal (see `src/main/java/com/google/devtools/build/skyframe/AbstractInMemoryMemoizingEvaluator.java#pruneInjectedValues`)

Fixes bazelbuild/rules_python#2387

PiperOrigin-RevId: 695696010
Change-Id: I136f2bec4e2c668d020f6cb1a7d3200f7523e5a0
(cherry picked from commit a5b6c30)