Fix settings errors in dump dependencies (#876)

Errors encountered during settings construction should be exposed via the JSON output.

Author: neonichu

Sources/SWBBuildService/BuildDependencyInfo.swift

@@ -381,6 +381,10 @@ extension BuildDependencyInfo {
         }
         let inputs = InputCollector()
 
+        for error in settings.errors {
+            await inputs.addError(error)
+        }
+
         // Collect inputs for targets which create a binary.
         if targetCreatesBinary(configuredTarget), let standardTarget = configuredTarget.target as? SWBCore.StandardTarget {
             let buildFilesContext = BuildDependencyInfoBuildFileFilteringContext(scope: settings.globalScope)