Merge pull request #3205 from emqx/20251013-sync-r58-into-r59

sync `release-5.8` into `release-5.9`

Merge pull request #3204 from emqx/20251013-update-screenshots

Update screenshots in docs

Merge pull request #3195 from emqx/20251001-r60-known-issues

chore: add known 6.0 issues

docs: add core/replicant node upgrade guidance to Japanese rolling up…

…grades doc

- Add section explaining alternating upgrade strategy for core/replicant clusters
- Translate content from English version to maintain consistency
- Ensure replicants always have compatible cores during rollout

Merge remote-tracking branch 'origin/release-5.9' into release-5.10

docs: add core/replicant node upgrade guidance to Japanese rolling up…

…grades doc

- Add section explaining alternating upgrade strategy for core/replicant clusters
- Translate content from English version to maintain consistency
- Ensure replicants always have compatible cores during rollout

Merge pull request #3196 from zmstone/251006-document-core-replicant-…

…upgrade-steps

docs(rolling-upgrade): document core-replicant upgrade order

Merge pull request #3194 from emqx/20251001-update-global-rnd-address

update Global R&D center address

Merge remote-tracking branch 'origin/release-5.9' into release-5.10

Merge remote-tracking branch 'origin/release-5.8' into release-5.9