Allow a subset of HTML tags for Multiple Choices label rendering

[Soare-Robert-Daniel]

Closes #2091

Summary

Instead of escaping the HTML, I used the wp_kses to clean and allow only a subset of HTML tags.

Screenshots

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Test instructions

1. Insert a Form and a multiple choices field.
2. In the field label, select the text and add a link using the native widget.
3. Check if the link is present in Frontend(Page Preview)

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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	239.1 KB	239.1 KB	0 B (0.00%)
Blocks	1.5 MB	1.5 MB	0 B (0.00%)
CSS	93.17 KB	93.17 KB	0 B (0.00%)
Dashboard	201.53 KB	201.53 KB	0 B (0.00%)
Onboarding	154.18 KB	154.18 KB	0 B (0.00%)
Export Import	90.95 KB	90.95 KB	0 B (0.00%)
Pro	355.91 KB	355.91 KB	0 B (0.00%)

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E2E Tests

Playwright Test Status:

Performance Results

serverResponse: 222.85, firstPaint: 552.7, domContentLoaded: 1575.25, loaded: 1575.75, firstContentfulPaint: 3647.2, firstBlock: 5631.25, type: 12.94, minType: 11.52, maxType: 15.87, typeContainer: 8.06, minTypeContainer: 6.86, maxTypeContainer: 10.32, focus: 43.07, minFocus: 39.2, maxFocus: 49.84, inserterOpen: 28.83, minInserterOpen: 26.35, maxInserterOpen: 33.37, inserterSearch: 6.85, minInserterSearch: 6.35, maxInserterSearch: 7.86, inserterHover: 3.55, minInserterHover: 2.92, maxInserterHover: 5.1, listViewOpen: 154.81, minListViewOpen: 137.33, maxListViewOpen: 192.29

[pirate-bot]

🎉 This PR is included in version 2.6.11 🎉

The release is available on GitHub release

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