fix(language-service): Recover from error in analyzing Ng Modules (#37108)

In place of failing to return analyzed Ng Modules when the analyzer
fails, return the previously-analyzed Ng Modules (which may be empty)
and log an error.

Closes https://github.com/angular/vscode-ng-language-service/issues/777

PR Close #37108

packages/language-service/test/test_utils.ts

@@ -101,6 +101,7 @@ export class MockTypescriptHost implements ts.LanguageServiceHost {
   private readonly overrideDirectory = new Set<string>();
   private readonly existsCache = new Map<string, boolean>();
   private readonly fileCache = new Map<string, string|undefined>();
+  errors: string[] = [];
 
   constructor(
       private readonly scriptNames: string[],
@@ -398,6 +399,10 @@ export class MockTypescriptHost implements ts.LanguageServiceHost {
     }
     throw new Error(`Failed to find marker '${selector}' in ${fileName}`);
   }
+
+  error(msg: string) {
+    this.errors.push(msg);
+  }
 }
 
 const locationMarker = /\~\{(\w+(-\w+)*)\}/g;