ensure blocks are present before processing

[psorensen]

Description of the Change

Closes #

How to test the Change

1. Set safe_svg_optimizer_enabled filter to return true
   add_filter( 'safe_svg_optimizer_enabled', '__return_true' );
2. Create a new Page, populate the page title and featured image. Do not populate any blocks.
3. Publish the post.
4. Page should publish without normally without issue.

Changelog Entry

Fixed fatal JS error when optimization is enabled and page is published without blocks.

Credits

Props @tictag @psorensen

Checklist:

• I agree to follow this project's Code of Conduct.
• I have updated the documentation accordingly.
• I have added tests to cover my change.
• All new and existing tests pass.

[coreyworrell]

Any estimate when this will be released? Having to constantly enable/disable the plugin or comment out the filter when editing content is becoming a hassle. Thanks very much.

[psorensen]

@coreyworrell Hard to provide timing, but it might be worth checking out the 2.3.0 milestone https://github.com/10up/safe-svg/milestone/10 to see the list of open tasks the next release is dependent on.

Additionally, you can use the develop branch of this repo to access the latest features/fixes.

[dkotter]

@coreyworrell Hoping to get the next release finalized and out this week