fix: update block version to 3

[Soare-Robert-Daniel]

Closes #.

Summary

• Bump the Block API version to 3.

Screenshots

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Test instructions

Part A — Quick health check

1. New page. 2. Console shows no "API version 2" / "added to the iframe incorrectly" messages. 3. Add each Otter block once — none go blank, error, or show
   "This block has encountered an error."

Part B — Most important blocks (test carefully)

• B1 Google Map — map appears, add/drag/delete marker, change style, zoom. Bug if: blank/gray, wrong size, markers won't move.
• B2 Leaflet Map — add/drag pin, open popup → "Delete Marker" works, make taller (no gray gap). Bug if: delete does nothing.
• B3 Slider — 3+ slides cycle with arrows/dots. Bug if: slides just stacked.
• B4 Lottie — animation plays/loops. Bug if: empty box.
• B5 Posts/Products — grid of posts; (Pro) products. Bug if: empty when posts exist.
• B6 Image — box-shadow with a theme palette color at opacity below 100% shows correct color. Bug if: turns black/disappears.

Part C — Other blocks (quick)

Review, Form, Countdown/Progress/Circle Counter, Animations, and the Pro/WooCommerce blocks — each appears, previews, and saves.

Part D — Published page unchanged

Publish a mixed-block page → looks the same as before. Open an old page → no "unexpected or invalid content" warning.

Where to test

Page editor (main), Tablet/Mobile preview, Site Editor, and older WordPress 6.3 (just Part A).

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Checklist before the final review

• Included E2E or unit tests for the changes in this PR.
• Visual elements are not affected by independent changes.
• It is at least compatible with the minimum WordPress version.
• It loads additional script in frontend only if it is required.
• Does not impact the Core Web Vitals.
• In case of deprecation, old blocks are safely migrated.
• It is usable in Widgets and FSE.
• Copy/Paste is working if the attributes are modified.
• PR is following the best practices

[pirate-bot]

Bundle Size Diff

Package	Old Size	New Size	Diff
Animations	178.24 KB	178.24 KB	0 B (0.00%)
Blocks	1.47 MB	1.47 MB	317 B (0.02%)
CSS	7.71 KB	7.71 KB	0 B (0.00%)
Dashboard	105.69 KB	105.69 KB	0 B (0.00%)
Onboarding	68.14 KB	68.14 KB	0 B (0.00%)
Export Import	4.7 KB	4.7 KB	0 B (0.00%)
Pro	299 KB	299.32 KB	332 B (0.11%)

[pirate-bot]

Plugin build for 58fc71a is ready 🛎️!

• Download Otter – Page Builder Blocks & Extensions for Gutenberg - Production ~ Development
• Download Otter Pro - Production ~ Development
• Download Blocks Animation - Production ~ Development
• Download Blocks CSS - Production ~ Development
• Download Blocks Export Import - Production ~ Development

[pirate-bot]

E2E Tests

Playwright Test Status: See serial and parallel matrix jobs

Performance Results

serverResponse: {"q25":470.1,"q50":512.2,"q75":517.1,"cnt":10}, firstPaint: {"q25":602.5,"q50":650.2,"q75":672.2,"cnt":10}, domContentLoaded: {"q25":2551,"q50":2565.75,"q75":2622,"cnt":10}, loaded: {"q25":2551.4,"q50":2566.25,"q75":2622.5,"cnt":10}, firstContentfulPaint: {"q25":3013.7,"q50":3035.35,"q75":3100.5,"cnt":10}, firstBlock: {"q25":8095.7,"q50":8197.2,"q75":8370.4,"cnt":10}, type: {"q25":14.35,"q50":14.87,"q75":15.33,"cnt":10}, typeWithoutInspector: {"q25":12.74,"q50":13.37,"q75":15,"cnt":10}, typeWithTopToolbar: {"q25":17.57,"q50":18.58,"q75":19.67,"cnt":10}, typeContainer: {"q25":8.82,"q50":9.26,"q75":9.72,"cnt":10}, focus: {"q25":51.05,"q50":53.09,"q75":58.69,"cnt":10}, inserterOpen: {"q25":16.56,"q50":17.79,"q75":19.33,"cnt":10}, inserterSearch: {"q25":5.36,"q50":5.56,"q75":5.92,"cnt":10}, inserterHover: {"q25":4.42,"q50":4.68,"q75":4.93,"cnt":20}, loadPatterns: {"q25":1233.89,"q50":1285.4,"q75":1328.39,"cnt":10}, listViewOpen: {"q25":95.59,"q50":96.42,"q75":101.26,"cnt":10}