[IMP] types: make component generic types optional

In most cases, we just want Component<any, Env>. But since it was so
annoying to have always the type Env, we actually used
Component<any,any> everywhere.

With this commit, the generic types have a default (and their order is
swapped), so we can simply use Component in most cases, and
Component<Props> when we want to type the props.

tests/tooling/debug_script_3.test.ts

@@ -21,7 +21,7 @@ test("log a specific message for render method calls if component is not mounted
   const log = console.log;
   console.log = arg => steps.push(arg);
 
-  class Parent extends Component<any, any> {
+  class Parent extends Component {
     static template = xml`<div><t t-esc="state.value"/></div>`;
     state = owl.hooks.useState({ value: 1 });
   }