Disallow unsafe type assertions (#18688)

packages/core/src/utils/shell-utils.ts

@@ -237,6 +237,7 @@ function parseCommandTree(
       progressCallback: () => {
         if (performance.now() > deadline) {
           timedOut = true;
+          // eslint-disable-next-line @typescript-eslint/no-unsafe-type-assertion
           return true as unknown as void; // Returning true cancels parsing, but type says void
         }
       },