[roll] Roll fuchsia Revert "[services] Obfuscate aggregated service instance ids"

This reverts commit 42c722517227d8058a34fac64708a8eae7fa9020.

Reason for revert: Tests are flaking fxb/125350, fxb/125351, fxb/125346

Original-Bug: 125350, 125351, 125346

Original change's description:
> [services] Obfuscate aggregated service instance ids
>
> Previously, instances in services exposed from collections were named
> by combining the source component instance name with the service
> instance name, e.g.
>
> /svc/fuchsia.example.Foo
>     foo,default
>     foo,qwe
>     bar,default
>
> These instances now have a randomly generated UUID name:
>
> /svc/fuchsia.example.Foo
>     7731ac32100e4437a56b7931ed89c056
>     1587c7e0af284b49930679ee1b8168b4
>     2f9d3c574a884cedab6a816ccace51dc
>
> This avoids expose monikers to clients, which break encapsulation and
> form an unstable ABI.
>
> Original-Bug: 4776
>
> Original-Reviewed-on: https://fuchsia-review.googlesource.com/c/fuchsia/+/813370

Original-Bug: 4776
No-Presubmit: true
No-Tree-Checks: true
No-Try: true
Original-Reviewed-on: https://fuchsia-review.googlesource.com/c/fuchsia/+/834937
Original-Revision: 697e158762c7e7a2b086eadf4188d623bae6864f
GitOrigin-RevId: 8929188e9398ce8999402daab8e3ff88bbdce4e8
Change-Id: I9ffc178fcb4423bff086c660b57649122b34e366