fix: derive container names from typed constants (#829)

* derive container names from typed constants instead of Display

* changelog

* Update CHANGELOG.md

Co-authored-by: Siegfried Weber <mail@siegfriedweber.net>

* changes following review

---------

Co-authored-by: Siegfried Weber <mail@siegfriedweber.net>

Author: adwk67

CHANGELOG.md

@@ -23,7 +23,7 @@ All notable changes to this project will be documented in this file.
   are no longer created with the placeholder `app.kubernetes.io/component: none` and
   `app.kubernetes.io/role-group: none` labels.
   StatefulSet selectors and volume claim templates are unchanged, so upgrading is non-breaking.
-- Make operations infallible where dependent on static inputs ([#824]).
+- Make operations infallible where dependent on static inputs ([#824], [#829]).
 
 ### Fixed
 
@@ -41,6 +41,7 @@ All notable changes to this project will be documented in this file.
 [#819]: https://github.com/stackabletech/hdfs-operator/pull/819
 [#821]: https://github.com/stackabletech/hdfs-operator/pull/821
 [#824]: https://github.com/stackabletech/hdfs-operator/pull/824
+[#829]: https://github.com/stackabletech/hdfs-operator/pull/829
 
 ## [26.7.0] - 2026-07-21