fix(compiler): only warn for @Injectable classes with invalid args.

In v2.x, users had to annotate classes that they intended to use as tokens with `@Injectable`. This is no longer required in v4.x for tokens,
and we now require the constructor parameters of classes annotated
with `@Injectable` to be statically analyzable by ngc.

This commit reduces the error into a warning
if the constructor parameters do not meet this condition.

DEPRECATION:
- Classes annotated with `@Injectable` but whose constructor’s parameter types
  are not statically analyzable by ngc will produce a warning.

Closes #15003

packages/compiler/src/aot/compiler_factory.ts

@@ -67,7 +67,7 @@ export function createAotCompiler(compilerHost: AotCompilerHost, options: AotCom
   const resolver = new CompileMetadataResolver(
       config, new NgModuleResolver(staticReflector), new DirectiveResolver(staticReflector),
       new PipeResolver(staticReflector), summaryResolver, elementSchemaRegistry, normalizer,
-      symbolCache, staticReflector);
+      console, symbolCache, staticReflector);
   // TODO(vicb): do not pass options.i18nFormat here
   const importResolver = {
     getImportAs: (symbol: StaticSymbol) => symbolResolver.getImportAs(symbol),