fix(compiler-cli): ignore non-existent files

Ignore files that fail fs.exists() rather than throw ENOENT.  Some applications deliberately create "broken" symbolic links that are not relevant to compilation (e.g. emacs lock files that link to owner "user@host").

packages/compiler-cli/src/ngtsc/file_system/src/ts_read_directory.ts

@@ -90,10 +90,18 @@ export function createFileSystemTsReadDirectoryFn(
         const directories: string[] = [];
 
         for (const child of children) {
-          if (fs.stat(fs.join(resolvedPath, child))?.isDirectory()) {
-            directories.push(child);
-          } else {
-            files.push(child);
+          try {
+            if (fs.stat(fs.join(resolvedPath, child))?.isDirectory()) {
+              directories.push(child);
+            } else {
+              files.push(child);
+            }
+          } catch (error) {
+            if (error instanceof Error && error.message.includes('ENOENT')) {
+              // may be a dangling link or other file system error, ignore
+              continue;
+            }
+            throw error;
           }
         }