Add Jungfrau do pedestal darks plans

[olliesilvester]

Part of #1200

This adds the pedestal dark plan. Note that we will need a new release of ophyd-async (for bluesky/ophyd-async@15fa34b) for this plan to actually work on the beamline

1. Confirm plan does the same thing as the hotfixed messy version in /dls_sw/i24/software/bluesky/jungfrau_25
2. Check test is sufficient

Checks for reviewer

• Would the PR title make sense to a user on a set of release notes

[olliesilvester]

I think this is in a mergable state now? WIll do an ophyd-async release next week so CI can pass

[DominicOram]

I think this is in a mergable state now? WIll do an ophyd-async release next week so CI can pass

ophyd-async release done so I think we just need to add the small tests and fix the failing CI

[DominicOram]

Nit:

Suggested change

	async def test_jungfrau_unstage(
	async def test_jungfrau_unstaged_when_plan_in_error(

[DominicOram]

If they win then we should add them in

[olliesilvester]

Couple of bugs caught from last bit of testing:

• fly_jungfrau doesn't do wait on stage
• Staging the JF puts the JF out of pedestal mode, this means the part which says "please enter pedestal mode when you next prepare" needs to be in-between stage and prepare, which means fly_jungfrau needs an extra parameter to know if is doing things in pedestal mode.

Sort of thinking about extending TriggerInfo for the jungfrau to get some proper pedestal options in? That'll be a future ticket though

[DominicOram]

As discussed, can we move the stage out of fly_jungfrau, instead plans that call fly_jungfrau should first do @bpp.stage_decorator([jungfrau]). do_pedestal_darks can then set the pedestal PVs itself. We should add a comment in fly_jungfrau to say it should be staged.

[DominicOram]

Great, thanks. One comment. Also do_internal_acquisition and do_external_acquisition should probably include the stage decorators.

[olliesilvester]

Also do_internal_acquisition and do_external_acquisition should probably include the stage decorators.

We decided that these are plans stubs so the staging goes in whatever plan is using them

[DominicOram]

Great, thank you!