Social: Fix initial state undefined variable

[gmjuhasz]

Fixes an undefined variable warning that could happen after #38669

Proposed changes:

• Moved the problematic line inside the condition for Social, as the social prop is only added to the initial state in that case

Other information:

• Have you written new tests for your changes, if applicable?
• Have you checked the E2E test CI results, and verified that your changes do not break them?
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Jetpack product discussion

Does this pull request change what data or activity we track or use?

Testing instructions:

• In Gutenberg with Publicize off, you could see the warning
• Turn off Publicize in Jetpack Settings
• Open Gutenberg for a new post
• Check docker logs with jetpack docker logs
• With this change it should go away

[github-actions]

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• To test on WoA, go to the Plugins menu on a WordPress.com Simple site. Click on the "Upload" button and follow the upgrade flow to be able to upload, install, and activate the Jetpack Beta plugin. Once the plugin is active, go to Jetpack > Jetpack Beta, select your plugin, and enable the fix/social-initial-state-undefined-variable branch.

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[github-actions]

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[spsiddarthan]

I am not able to reproduce the said issue on my JN site, but the fix makes sense.

[bobbingwide]

Just to confirm the Undefined variable did happen when I did Add new post.

Warning: Undefined variable $social_initial_state in /home/customer/www/herbmiller.me/public_html/wp-content/plugins/jetpack/class.jetpack-gutenberg.php on line 776



Warning: Trying to access array offset on value of type null in /home/customer/www/herbmiller.me/public_html/wp-content/plugins/jetpack/class.jetpack-gutenberg.php on line 776

Looking forward to the next release therefore.