fix(ivy): ngcc - empower Esm5ReflectionHost to analyze ModuleWithProviders functions (#29092)

In ESM5 code, static methods appear as property assignments onto the constructor
function. For example:

```
var MyClass = (function() {
  function MyClass () {}
  MyClass.staticMethod = function() {};
  return MyClass;
})();
```

This commit teaches ngcc how to process these forms when searching
for `ModuleWithProviders` functions that need to be updated in the typings
files.

PR Close #29092

packages/compiler-cli/ngcc/test/host/esm2015_host_spec.ts

@@ -553,7 +553,7 @@ const MODULE_WITH_PROVIDERS_PROGRAM = [
   {name: '/src/module', contents: 'export class ExternalModule {}'},
 ];
 
-describe('Fesm2015ReflectionHost', () => {
+describe('Esm2015ReflectionHost', () => {
 
   describe('getDecoratorsOfDeclaration()', () => {
     it('should find the decorators on a class', () => {