fix(ivy): i18n - use MessageId for matching translations (#32594)

As discussed in https://hackmd.io/33M5Wb-JT7-0fneA0JuHPA `SourceMessage`
strings are not sufficient for matching translations.

This commit updates `@angular/localize` to use `MessageId`s for translation
matching instead.

Also the run-time translation will now log a warning to the console if a
translation is missing.

BREAKING CHANGE:

Translations (loaded via the `loadTranslations()` function) must now use
`MessageId` for the translation key rather than the previous `SourceMessage`
string.

PR Close #32594

packages/compiler/src/i18n/index.ts

@@ -5,7 +5,7 @@
  * Use of this source code is governed by an MIT-style license that can be
  * found in the LICENSE file at https://angular.io/license
  */
-
+export {computeMsgId} from './digest';
 export {Extractor, ExtractorHost} from './extractor';
 export {I18NHtmlParser} from './i18n_html_parser';
 export {MessageBundle} from './message_bundle';