fix: Switch order of config resolution so defaults can be overridden (#597)

* switch order of config resolution so defaults can be overridden

* Allow configuring the loglevel when using Tilt (and in principle in the helm chart as well).
Default value is: "INFO"

If nothing is set, Tilt defaults to an empty string, which is the default in Helm as well and leads to the environment var not being set on the Deployment, hence using the default from our code.
This way we avoid creating multiple defaults in different places..

* revert tilt/log changes

* changelog

---------

Co-authored-by: Sönke Liebau <soenke.liebau@stackable.tech>

Author: adwk67

CHANGELOG.md

@@ -25,13 +25,15 @@
 
 - Fix `git-sync` functionality in case no `gitFolder` is specified.
   The `gitFolder` field is now non-nullable, but has a default value, resulting in no breaking change ([#596]).
+- Fix configOverrides by applying after defaults ([#597]).
 
 [#557]: https://github.com/stackabletech/airflow-operator/pull/557
 [#571]: https://github.com/stackabletech/airflow-operator/pull/571
 [#572]: https://github.com/stackabletech/airflow-operator/pull/572
 [#573]: https://github.com/stackabletech/airflow-operator/pull/573
 [#594]: https://github.com/stackabletech/airflow-operator/pull/594
 [#596]: https://github.com/stackabletech/airflow-operator/pull/596
+[#597]: https://github.com/stackabletech/airflow-operator/pull/597
 
 ## [24.11.1] - 2025-01-09