Handle renderPlain() deprecation

The tests for "previous_major" are run against Drupal 9.5, so that is the oldest version I would confidently say Smart Trim will work against.

I added the following to another module that wasn't willing to drop D9 support yet:

    if (version_compare(\Drupal::VERSION, '10.1.0') >= 0) {
      // Drupal 10.1 or later, use DeprecationHelper.
      // Note, put back named parameters when we drop support for Drupal 9.5.
      $output = DeprecationHelper::backwardsCompatibleCall(
        \Drupal::VERSION,
        '10.3',
        fn() => \Drupal::service('renderer')->renderInIsolation($build),
        fn() => \Drupal::service('renderer')->renderPlain($build),
      );
    }
    else {
      // Remove when we drop support for < Drupal 10.1.
      // @phpstan-ignore-next-line
      $output = \Drupal::service('renderer')->renderPlain($build);
    }

It's a little bit hacky, especially since D9 needs to support PHP 7.4, so I had to remove named parameters from the DeprecationHelper. Hopefully we'll drop D9 support and remove the if() wrapper.

Merged in an update that dropped <9.5 support for the next release.

Hi,
I've updated the MR with replacing the logic of implementing renderPlain deprecation with the below code block.

if (method_exists(RendererInterface::class, 'renderPlain')) {
        // @phpstan-ignore-next-line as it is deprecated in D10.3 and removed from D12.
        $field_output_renderer = \Drupal::service('renderer')->renderPlain($field_output);
      }
      else {
        $field_output_renderer = \Drupal::service('renderer')->renderInIsolation($field_output);
      }

Pros:

1. Support below D10
2. Handles both renderPlain and renderInIsolation without deprecationHelper class.

cc: @markie @ultimike

Thanks @lostcarpark and @ankitv18 - I'm closing this issue as the fix is part of ✨ Smart Trim Tokens for text with summary fields Needs review .

-mike

Automatically closed - issue fixed for 2 weeks with no activity.