[9.x] Improve assertSeeText and assertDontSeeText test methods

[nshiro]

When you use assertSee test method and fail the test, you get a message like below.

  ' contains "Hello, Taylor.".

  at tests/Feature/ExampleTest.php:20
     16▕     {
     17▕         $response = $this->get('/');
     18▕
     19▕         $response->assertStatus(200)
  ➜  20▕             ->assertSee('Hello, Taylor.');

This is ok.
But meanwhile if you use assertSeeText and fail the test, you get a message like below.

  ' contains "Hello, Taylor.".

  at vendor/laravel/framework/src/Illuminate/Support/helpers.php:306
    302▕         if (is_null($callback)) {
    303▕             return new HigherOrderTapProxy($value);
    304▕         }
    305▕
  ➜ 306▕         $callback($value);
    307▕
    308▕         return $value;
    309▕     }
    310▕ }

This is not so helpful or just confusing.
To solve this, we can just forget about nice helper function tap and use the old-fashioned way.
By doing so, we can get the same error message as assertSee.
The same applies to assertDontSeeText.