feat(a380x/sd): Improve SD BLEED page visuals and logic

[lukecologne]

Summary of Changes

This PR improves the visuals of the BLEED SD page, and adds/changes the following indications and logics:

• APU duct and valve indications no longer depend on pack status, but only on APU valve position
• Improved and more granular crossbleed indications, now only depending on crossbled and APU valve position and no longer pack status
• Engine bleed duct indication now depends on engine bleed valve, and crossbleed and APU valves depending on engine position. No longer depends on pack flow control valve
• Mixer unit bleed air user indication color now uses pack flow control valve and ram air inlet, no longer engine 1 and 2 HP valve position.

Screenshots (if necessary)

References

Additional context

Discord username (if different from GitHub):

Testing instructions

Make sure the bleed indication changes mentioned above make sense in various bleed system conditions. Otherwise, no testing required, as the changes are purely visual

How to download the PR for QA

Every new commit to this PR will cause new A32NX and A380X artifacts to be created, built, and uploaded.

1. Make sure you are signed in to GitHub
2. Click on the Checks tab on the PR
3. On the left side, find and click on the PR Build tab
4. Click on either flybywire-aircraft-a320-neo, flybywire-aircraft-a380-842 (4K) or flybywire-aircraft-a380-842 (8K) download link at the bottom of the page