fix(language-server): Fix detection of Angular for v14+ projects (#1658)
fix(language-server): Fix detection of Angular for v14+ projects (#1658)

In v14, the .d.ts file for angular core is now "index.d.ts" rather than "core.d.ts".

This change happened in https://github.com/ng-packagr/ng-packagr/commit/c6f6e4d701d31e3d9e8636703ede731c3790778b

fixes #1657
angular/vscode-ng-language-service,angular/vscode-ng-language-service,angular/vscode-ng-language-service,angular/vscode-ng-language-service