fix(ivy): correct absolute path processing for templateUrl and styleUrls (#28789)

Prior to this change absolute file paths (like `/a/b/c/style.css`) were calculated taking current component file location into account. As a result, absolute file paths were calculated using current file as a root. This change updates this logic to ignore current file path in case of absolute paths.

PR Close #28789

packages/compiler-cli/src/ngtsc/resource_loader.ts

@@ -115,6 +115,9 @@ export class HostResourceLoader implements ResourceLoader {
     // Strip a leading '/' if one is present.
     if (url.startsWith('/')) {
       url = url.substr(1);
+
+      // Do not take current file location into account if we process absolute path.
+      fromFile = '';
     }
     // Turn absolute paths into relative paths.
     if (!url.startsWith('.')) {