[v24.3.x] controller: Skip FPM truncation if TS is not enabled #26820
Description
Backport #26803 to branch v24.3.x. This issue was created as a placeholder because the original PR's commit(s) could not be automatically cherry-picked.
Here are the commands to execute:
git checkout v24.3.x
git checkout -b manual-backport-26803-v24.3.x-385
git cherry-pick -x 668db629ae 3dc8d34956
git push origin manual-backport-26803-v24.3.x-385
gh pr create \
--title "[v24.3.x] controller: Skip FPM truncation if TS is not enabled" \
--base "v24.3.x" \
--label "kind/backport" \
--head "manual-backport-26803-v24.3.x-385" \
--draft \
--repo "redpanda-data/redpanda" \
--milestone "v24.3.x-next" \
--body "Backport of PR https://github.com/redpanda-data/redpanda/pull/26803 "
JIRA Link: [CORE-12815](https://redpandadata.atlassian.net/browse/CORE-12815)
[CORE-12815]: https://redpandadata.atlassian.net/browse/CORE-12815?atlOrigin=eyJpIjoiNWRkNTljNzYxNjVmNDY3MDlhMDU5Y2ZhYzA5YTRkZjUiLCJwIjoiZ2l0aHViLWNvbS1KU1cifQ