[PM-21934] Upgrade to eslint 9 (#14754)

Upgrades to Eslint v9. Since this is a major version there were breaking changes, but since we've previously migrated to flat configs in #12806 those were minimal.

apps/cli/src/utils.ts

@@ -161,7 +161,6 @@ export class CliUtils {
 
       process.stdin.setEncoding("utf8");
       process.stdin.on("readable", () => {
-        // eslint-disable-next-line
         while (true) {
           const chunk = process.stdin.read();
           if (chunk == null) {