[v24.2.x] kafka: Consumer group stale static member properties on rejoin

[vbotbuildovich]

Backport #23693 to branch v24.2.x. Note that this issue was created as a placeholder, since the original PR's commit(s) could not be automatically cherry-picked.
Here are the commands to execute:

git checkout v24.2.x
git checkout -b vbotbuildovich/backport-23693-v24.2.x-800
git cherry-pick -x e1bc0df34c 72365bb767

git push origin vbotbuildovich/backport-23693-v24.2.x-800
gh pr create \
  --title "[v24.2.x] kafka: Consumer group stale static member properties on rejoin" \
  --base "v24.2.x" \
  --label "kind/backport" \
  --head "vbotbuildovich/backport-23693-v24.2.x-800" \
  --draft \
  --repo "redpanda-data/redpanda" \
  --milestone "v24.2.x-next" \
  --body "Backport of PR https://github.com/redpanda-data/redpanda/pull/23693 "

[oleiman]

closed by #23729