[roll] Roll fuchsia Reland "[starnix] Refresh modify_time with value managed by filesystem"

This is a reland of commit 5ec53c4ccc98f9aa6f4d746beb02d3a51767e7aa.
It also combines the changes in
commit 240a07a4d85c9ec9ffb057df879db5801f77ec87 that fixes a bug in the
former commit.

This fixes an issue with the previous commits where FsNodeInfo was
updated with `attrs.modfication_time` when it was not set. Also, change
the function that updates FsNodeInfo with fields of `attrs` only if it
was set.

Original change's description:
> [starnix] Refresh modify_time with value managed by filesystem
>
> Modification time should be managed by the underlying filesystem if the
> filesystem supports that. When node info is refreshed, it will now be
> refreshed with the modification time that the filesystem manages.
>
> Original-Bug: b/294318193
> Original-Reviewed-on: https://fuchsia-review.googlesource.com/c/fuchsia/+/901058
>
>
> [starnix] Fix update_attributes bug
>
> This change fixes two bugs in `update_attributes()`. It was previously
> not correctly checking if `time_modify` had been modified. It was also
> only updating node info only if `time_modify`, `mode`, `uid, `gid`, or
> `rdev` was modified.
>
> Original-Bug: b/294318193
> Original-Reviewed-on: https://fuchsia-review.googlesource.com/c/fuchsia/+/904380

Original-Bug: b/294318193
Original-Fixed: b/297439844
Original-Reviewed-on: https://fuchsia-review.googlesource.com/c/fuchsia/+/940176
Original-Revision: 11c60e6c812433c552db820f04a6557aced0aa0c
GitOrigin-RevId: 503ea2fe7f668637a2744fa504f962c79fea5bd3
Change-Id: I0c5b7ab9220f1f23bbb318b88f34923b04eac027