[v26.1.x] [CORE-15886] cfr_tests: deflake controller recovery wait

Backport https://github.com/redpanda-data/redpanda/pull/30702 to branch v26.1.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 v26.1.x git checkout -b manual-backport-30702-v26.1.x-869 git cherry-pick -x fa39ef7e03 git push origin manual-backport-30702-v26.1.x-869 gh pr create \ --title "[v26.1.x] [CORE-15886] cfr_tests: deflake controller recovery wait" \ --base "v26.1.x" \ --label "kind/backport" \ --head "manual-backport-30702-v26.1.x-869" \ --draft \ --repo "redpanda-data/redpanda" \ --milestone "v26.1.x-next" \ --body "Backport of PR https://github.com/redpanda-data/redpanda/pull/30702 " [CORE-15886]: https://redpandadata.atlassian.net/browse/CORE-15886?atlOrigin=eyJpIjoiNWRkNTljNzYxNjVmNDY3MDlhMDU5Y2ZhYzA5YTRkZjUiLCJwIjoiZ2l0aHViLWNvbS1KU1cifQ