[Gutenberg] Fix Media & Text block crash

[geriux]

Gutenberg PR -> WordPress/gutenberg#18907

Fixes #10876 Media & Text crash.

NOTE: This PR is just for testing the fix, do not merge.

To test:

• Download the generated APK in this PR.
• Open the Gutenberg Web editor:
• Create a new post with this code:

<!-- wp:media-text {"mediaId":29,"mediaType":"image","imageFill":true,"focalPoint":{"x":0.52,"y":0.12}} -->
<div class="wp-block-media-text alignwide is-stacked-on-mobile is-image-fill"><figure class="wp-block-media-text__media" style="background-image:url(https://geriuxx-atomic-site-1.blog/wp-content/uploads/2019/12/img_0004-1.jpg);background-position:52% 12%"><img src="https://geriuxx-atomic-site-1.blog/wp-content/uploads/2019/12/img_0004-1.jpg" alt="" class="wp-image-29"/></figure><div class="wp-block-media-text__content"><!-- wp:paragraph {"placeholder":"Content…","fontSize":"large"} -->
<p class="has-large-font-size"></p>
<!-- /wp:paragraph --></div></div>
<!-- /wp:media-text -->

• Save
• Open the newly created post from the app without metro running
• Expect the Media & Text block to be visible without any crashes.

PR submission checklist:

• I have considered adding unit tests where possible.

• I have considered if this change warrants user-facing release notes and have added them to RELEASE-NOTES.txt if necessary.

[peril-wordpress-mobile]

	Warnings
⚠️	PR is not assigned to a milestone.

Generated by 🚫 dangerJS

[peril-wordpress-mobile]

You can test the changes on this Pull Request by downloading the APK here.