Fixed compilation bug releated with splash image: (#666)
```
C:\GIT\o3de\build\Code\LauncherUnified\AtomSampleViewer.GameLauncher.rc(11):
error RC2135:
file not found: C:/GIT/o3de/AtomSampleViewer/Gem/Resources/LegacyLogoLauncher.bmp
```
The bug was caused by this o3de PR:
https://github.com/o3de/o3de/pull/17317
Signed-off-by: galibzon <[email protected]>
galibzon
