[Backport v3.3-branch] Bluetooth: Mesh: Discard iv update 1 0 --> 1 1 #60267
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According spec, for the same iv index, iv update flag should trans to false, when iv update procedure complete. When local environment has attack-node to store old network beacon(1,1), and re-send same network beacon(1,1) after 192hours, will cause whole bluetooth mesh network broke. Signed-off-by: Lingao Meng <menglingao@xiaomi.com> (cherry picked from commit 75cfa34)
Add testcast for 1, 1 --> 1, 0 Signed-off-by: Lingao Meng <menglingao@xiaomi.com> (cherry picked from commit c16647d)
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Backport c16647d~2..c16647d from #60194.
Fixes #60258