PHP Deprecated: round(): Passing null to parameter #1 ($num) of type int|float is deprecated when click what plan do I need

[Mai-Saad]

Before submitting an issue please check that you’ve completed the following steps:

• Made sure you’re on the latest version => 2.2.2
• Used the search feature to ensure that the bug hasn’t been reported before

Describe the bug
When click what plan do I need on imagify green banner 2.2.2 or upgrade link in admin bar at 2.2.3 we have deprecated notice in debug.log

To Reproduce
Steps to reproduce the behavior:

1. Fresh install/activate of 2.2.2 for starter account with balance >20%
2. Click on What plan do I need in green banner
3. check debug.log

[16-Oct-2024 13:17:11 UTC] PHP Deprecated:  round(): Passing null to parameter #1 ($num) of type int|float is deprecated in /var/www/new.rocketlabsqa.ovh/htdocs/wp-content/plugins/imagify/inc/classes/class-imagify-files-stats.php on line 408
[16-Oct-2024 13:17:11 UTC] PHP Deprecated:  round(): Passing null to parameter #1 ($num) of type int|float is deprecated in /var/www/new.rocketlabsqa.ovh/htdocs/wp-content/plugins/imagify/inc/classes/class-imagify-files-stats.php on line 438

Expected behavior
No deprecated notice

Screenshots
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Additional context
Add any other context about the problem here.

• same will occur on 2.2.3 if we click the upgrade link in admin bar or green banner
  Acceptance Criteria (for WP Media team use only)
  Clear instructions for developers, to be added before the grooming

[Khadreal]

I fixed this in this PR, check this commit 079a2f4. We can close this ticket.
cc @Mai-Saad