Media&Text: round position attribute on focal point save

[walbo]

Description

Currently, the focal point is not rounded in the Media & text block. That makes the block markup contain styles with many decimal places.

This PR fixes the problem and adds deprecation logic to keep current blocks valid.

Same logic was added to the cover block in #19183

Fixes #33615

How has this been tested?

1. On the trunk branch, I inserted a media text block with an image and enabled "Crop image to fill entire column".
2. I set the focal point coordinates to left 56% and top 57%.
3. I checked on the code editor that the background-position was 56.00000000000001% 56.99999999999999%.
4. I saved the post.
5. I switched to this branch and reloaded the post.
6. I verified the block was still valid and in the code editor I verified the background-position was now 56% 57%.
7. I inserted another block with same attributes and verified in the code editor that the position was 56% 57%.

Types of changes

Bug fix

Checklist:

• My code is tested.
• My code follows the WordPress code style.
• My code follows the accessibility standards.
• I've tested my changes with keyboard and screen readers.
• My code has proper inline documentation.
• I've included developer documentation if appropriate.
• I've updated all React Native files affected by any refactorings/renamings in this PR (please manually search all *.native.js files for terms that need renaming or removal).

[Mamaduka]

Hi, @walbo

Sorry, it looks like this PR fell through the cracks.

Do you mind rebasing this? I would be happy to help with testing 🙇

Thank you

[walbo]

Hi, @walbo

Sorry, it looks like this PR fell through the cracks.

Do you mind rebasing this? I would be happy to help with testing 🙇

Thank you

Yep 👍 Don't have time this week, but can fix it next week. Will tag you for a review when ready.

[walbo]

@Mamaduka Should be rebased and updated now. Sorry for the big changeset in the deprecated file. Made v1-v5 variables instead of having an huge array.

[Mamaduka]

Thank you, @walbo!

The deprecation clean-up looks good.

I tested new deprecation with a few different block setups from the pattern library, and there are no issues ✅

[walbo]

Thanks for the review and the help on testing 👍