refactor(compiler): i18n - render legacy i18n message ids (#34135)

Now that `@angular/localize` can interpret multiple legacy message ids in the
metablock of a `$localize` tagged template string, this commit adds those
ids to each i18n message extracted from component templates, but only if
the `enableI18nLegacyMessageIdFormat` is not `false`.

PR Close #34135

packages/compiler/test/i18n/digest_spec.ts

@@ -14,6 +14,7 @@ import {computeMsgId, digest, sha1} from '../../src/i18n/digest';
       it('must return the ID if it\'s explicit', () => {
         expect(digest({
           id: 'i',
+          legacyIds: [],
           nodes: [],
           placeholders: {},
           placeholderToMessage: {},