fix(efb): display local charts when selected through pinned charts menu

[yourcptainspeaking]

Fixes #8710

Summary of Changes

Changes the pinned charts logic to use chartName as an alternative value for chartLinks when no links exist on the pinnedChart object due to local files not using chartLinks.

Screenshots (if necessary)

N/A

References

N/A

Additional context

Previously, the chart would not be displayed and instead the "chart" alt text would be shown until the user clicked the chart in the "Local Files" tab.

Discord username (if different from GitHub):

Testing instructions

1. Add a PDF file to the flybywire-externaltools-simbridge\resources\pdfs folder
2. Load into MSFS and pin this file through the "Local Files" menu
3. Open the chart through the "Pinned Charts" menu
4. Chart should open as expected

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 or flybywire-aircraft-a380-842 download link at the bottom of the page

[Saschl]

Thanks for the contribution! LGTM

[LunakisDev]

Quality Assurance Trainee Report

Discord: LunakisLeaks
Object of testing: #8757
Tier of Testing: 1
Date: 16/7/2024

Testing Process:

1. Added PDFs files in flybywire-externaltools-simbridge\resources\pdfs folder.
2. Loaded into MSFS and pinned the PDFs through the "Local Files" menu.
3. Opened the charts through the "Pinned Charts" menu.
4. Charts open as expected.

Negatives:
N/A

Testing Results:
Passed

Conclusions:
LGTM