[roll] Roll fuchsia [netdevice] Remove const from MockNetworkDeviceIfc

llvm/llvm-project#121419 added
-Wignored-qualifiers diagnostic for cv-qualified base
classes. This patch removes const from MockNetworkDeviceIfc
to fix the -Wignored-qualifiers error similar to
https://fxrev.dev/1192542.

Original-Bug: 391704289
Original-Reviewed-on: https://fuchsia-review.googlesource.com/c/fuchsia/+/1194243
Original-Revision: 49dbcd7dd9a6aedc8294cc2cf816727e25706294
GitOrigin-RevId: 3785f90762ae439b3034af9a0a072de315e20664
Change-Id: Ia059b5d0303ca0ed94c40ac4dcc1e34533807fbb

Author: Gulfem Savrun Yeniceri

stem

@@ -11,7 +11,7 @@
              githooks="integration/git-hooks"
              remote="https://fuchsia.googlesource.com/fuchsia"
              gerrithost="https://fuchsia-review.googlesource.com"
-             revision="d10df7b1e4051c0ab2947879c031882d707b82ac"/>
+             revision="49dbcd7dd9a6aedc8294cc2cf816727e25706294"/>
   </projects>
   <hooks>
     <hook name="install-environment"