[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/router/route_component.test.ts

@@ -33,9 +33,9 @@ describe("RouteComponent", () => {
             <span t-name="Users">Users</span>
         </templates>
     `);
-    class About extends Component<any, any> {}
-    class Users extends Component<any, any> {}
-    class App extends Component<any, any> {
+    class About extends Component {}
+    class Users extends Component {}
+    class App extends Component {
       static components = { RouteComponent };
     }
 
@@ -65,8 +65,8 @@ describe("RouteComponent", () => {
             <span t-name="Book">Book <t t-esc="props.title"/></span>
         </templates>
     `);
-    class Book extends Component<any, any> {}
-    class App extends Component<any, any> {
+    class Book extends Component {}
+    class App extends Component {
       static components = { RouteComponent };
     }
 
@@ -87,12 +87,12 @@ describe("RouteComponent", () => {
             <span t-name="Book">Book <t t-esc="props.title"/>|<t t-esc="incVal"/></span>
         </templates>
     `);
-    class Book extends Component<any, any> {
+    class Book extends Component {
       get incVal() {
         return this.props.val + 1;
       }
     }
-    class App extends Component<any, any> {
+    class App extends Component {
       static components = { RouteComponent };
     }