[Bug] GHGcenter banner issues

[snmln]

GHGcenter banner icons not functioning correctly

Message context: The banner icons on the GHGC staging environment weren't loading properly when accessed through the /ghgcenter subpath. I suspect the issue might be related to the subpath configuration.
We attempted a quick workaround by prefixing the paths with /ghgcenter, but this didn't fully resolve the issue—specifically, the US flag icon still didn't show up.

URL: US-GHG-Center/veda-config-ghg#711

Blocking a release? (y/n): n

Regression issue? (y/n):
[If yes, add Regression label]

Priority: P3

[dzole0311]

@snmln Is this only happening when deployed to earth.gov/ghgcenter? Because if i open https://earth.gov/ghgcenter/img/icon-dot-gov.svg, I can see the icon 🤔

I thought this is already fixed via #1378, preview with the configuration for GHGC with the banner icons showing here: US-GHG-Center/veda-config-ghg#698

cc @slesaad

[snmln]

@dzole0311 The team was able to create a workaround prefixing the paths with /ghgcenter, which is what I believe we are seeing in the netlify preview currently.

[slesaad]

The files do get copied, but there are two issues:

1. like @snmln mentioned, we tried this workaround where we explicitly prefixed the path with /ghgcenter in here; but obviously that's not the best way to do it
2. The workaround worked for the guidance icons, but didn't for the us flag icon (it was still referring to /img/... instead of /ghgcenter/img/..) probably because of the icon path is hardcoded here