pending undelegation not release with inactive validator

[sophoah]

Describe the bug
https://staking.harmony.one/validators/mainnet/one1nef0c8kgy30delcckf87jaegdp7s7ntrknvajj has pending delegation that are not released at the end of epoch as it should

the list can be found with this curl command:

curl --location 'https://rpc.s0.t.hmny.io' --header 'Content-Type: application/json' --data '{
    "jsonrpc": "2.0",
    "id": 1,
    "method": "hmyv2_getDelegationsByValidator",
    "params": [
        "one1nef0c8kgy30delcckf87jaegdp7s7ntrknvajj"
    ]
}' | jq '.result | map(select(.Undelegations | length > 0))'

there are many pending delegation with old epoch (>7 epoch) and fund are not released

To Reproduce
NA

Expected behavior
A clear and concise description of what you expected to happen.

When a validator is not online for more than 7 epoch, the delegator has initiated the staking undelegation, fund should be released at the end of the epoch undelegation + 7.

Screenshots
If applicable, add screenshots to help explain your problem.

Environment (please complete the following information):

• OS: [Linux, MacOS]
• Go environment [ go env ]

Additional context

validator has been inactive for a while now. see result of

hmy blockchain validator information one1nef0c8kgy30delcckf87jaegdp7s7ntrknvajj -n https://api.harmony.one

i checked a few others validators that are also not active but they don't have any pending undelegation not cleared:
ie : one1aagrkq9vg49jm5xx22fvm4leg0lt48qeupexvu, one1s269hx6ch3u6hxuag5sp5ggwc68vem6d8du6ut,one1kh9xzevupc60jyw3t0r7wgsgkml8kw8w32z3h3