Fix onlyOtherSide state not updating properly when side changes (fixes #60)

src/main/kotlin/link/infra/packwiz/installer/DownloadTask.kt

@@ -109,12 +109,12 @@ internal class DownloadTask private constructor(val metadata: IndexFile.File, va
 							cachedFile.optionValue = linkedFile.option.defaultValue
 						}
 					}
+				}
 				cachedFile.isOptional = isOptional
 				cachedFile.onlyOtherSide = !correctSide()
 			}
 		}
 	}
-	}
 
 	/**
 	 * Check if the file in the destination location is already valid