fix(A32NX/EWD): Change fuel flow steps to 20kg/40lb per hour

[BravoMike99]

Fixes #[issue_no]

Summary of Changes

Changes fuel flow steps in the EWD to 20kg/40lb per hour

Screenshots (if necessary)

References

Additional context

Discord username (if different from GitHub):
bruno_pt99

Testing instructions

Choose weight unit in the EFB Aircraft Options\Pin Programs as kg.
Vary engine parameters and observe fuel flow changes in steps of 20kg.
Repeat the following process but for lbs, step should now be of 40lbs.

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

[MJ-AmJay]

Quality Assurance Trainee Report

Discord Username : notwong0639 (MJ)
Object of testing : #9591
Aircraft : A32NX FS2020
Tier of Testing : 1
Date : 28/11/2024

Testing Process:

1. Engine startup as per FBW A320 Documentations.
2. Choose weight unit in the EFB Aircraft Options\Pin Programs as kg.
3. Fuel flow corresponds in steps of 20kg.
4. Repeated the following process but for lbs, steps corresponds with 40lbs.

Testing Results:
Passed

Negatives: Not Applicable

Conclusions:
Awaiting for merge into master to test on A32NX FS2024 due to merger date behind #9575 A32NX FS2024 engine fix.

Media: https://youtu.be/7vF5Z69Y2Jg