Added whitespace support to form's submit button

[girishpanchal30]

Closes #2429

Summary

Added whitespace support

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	271.41 KB	271.41 KB	0 B (0.00%)
Blocks	1.56 MB	1.56 MB	-15 B (-0.00%)
CSS	100.89 KB	100.89 KB	0 B (0.00%)
Dashboard	198.45 KB	198.45 KB	0 B (0.00%)
Onboarding	161.1 KB	161.1 KB	0 B (0.00%)
Export Import	97.78 KB	97.78 KB	0 B (0.00%)
Pro	423.65 KB	423.65 KB	0 B (0.00%)

[pirate-bot]

Plugin build for 1fcb503 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:

Performance Results

serverResponse: 234.7, firstPaint: 542.45, domContentLoaded: 1545.85, loaded: 1546.75, firstContentfulPaint: 3400.15, firstBlock: 7570, type: 11.41, minType: 10.18, maxType: 13.08, typeContainer: 8.09, minTypeContainer: 7.26, maxTypeContainer: 11.14, focus: 31.79, minFocus: 28.23, maxFocus: 36.74, inserterOpen: 22.81, minInserterOpen: 19.43, maxInserterOpen: 35.69, inserterSearch: 0.69, minInserterSearch: 0.57, maxInserterSearch: 0.85, inserterHover: 3.15, minInserterHover: 2.53, maxInserterHover: 4.16, listViewOpen: 145.79, minListViewOpen: 128.58, maxListViewOpen: 158.63

[pirate-bot]

🎉 This PR is included in version 3.0.6 🎉

The release is available on GitHub release

Your semantic-release bot 📦🚀