Scheduled builds do not recreate the mamba environment

[matrss]

This step is intended to trigger a recreation of the mamba environment every time a scheduled test is done:

MSS/.github/workflows/testing.yml

Lines 48 to 51 in f503435

	- name: Always rebuild dependencies for scheduled builds
	if: ${{ success() && inputs.event_name == 'schedule' && inputs.branch_name == 'stable' && env.triggerdockerbuild != 'yes' }}
	run: |
	echo "triggerdockerbuild=yes" >> $GITHUB_ENV

There are some issues with it:

1. The condition is always false for develop, so scheduled tests on develop would not always recreate the environment
2. Since Fix: Scheduled test now triggers testing-stable.yml using workflow_dispatch #2196 was merged the condition is also always false for scheduled tests on stable because the event_name is not "schedule", but "workflow_dispatch"

Also, the scheduled tests never trigger a docker build because their event type is never "push", which might be another bug unless I misunderstand when the docker image builds should happen.

[matrss]

@ReimarBauer do you have some input on this?

[matrss]

@joernu76 this is the related issue to docker image creation.

[ReimarBauer]

@matrss are the two merges related and solving this?