docs: anonymise project asset names in source comments

Measured figures are kept; only the studio-specific level and asset
names are generalised, and the Perforce rationale is reworded to
describe the class of setups rather than this one project.

Co-Authored-By: Claude Code <noreply@anthropic.com>

Source/AssetUsageAuditTests/Private/AssetDeletionScan.spec.cpp

@@ -399,7 +399,7 @@ void AssetDeletionScanSpec::Define()
                 return;
             }
 
-            // This project is Perforce-primary, so read-only is the normal state of an unopened
+            // Perforce-primary projects keep unopened files read-only, so read-only is the normal state of an unopened
             // file. Reporting it up front is the difference between a warning and a delete that
             // fails halfway through the selection.
             TestEqual(TEXT("matches the filesystem"),