init: delay 'user root' test to W+

We'll make it a build time check in V after this.

Due to being a runtime flog, it was hard to spot and
debug, so delaying.

Bug: 340953047
Test: boot, CtsInitTestCases
Change-Id: Ica1a1c780e230c88615dad7937404d2b0fe9c68f
3 files changed