refactor(components): use OnPush and signals in components

Angular 22 defaults to OnPush, so Eager is removed.
Template state is now signals, so sorting needs no detectChanges.
Game of Life execution time now updates live.
Remove the unused ImageDialogComponent and turn the OnPush lint rule
back on.

eslint.config.js

@@ -18,8 +18,6 @@ module.exports = defineConfig([
       "@typescript-eslint/no-inferrable-types": "off",
       "@typescript-eslint/no-explicit-any": "off",
       "@typescript-eslint/prefer-for-of": "off",
-      // ng update set ChangeDetectionStrategy.Eager everywhere; OnPush is a separate refactor.
-      "@angular-eslint/prefer-on-push-component-change-detection": "off",
       "@angular-eslint/directive-selector": [
         "error",
         {