GO-5303 type widget created notification

[requilence]

• Event when auto-widget is added
• autoAdded field on widget block

[github-actions]

	🟢 SMOKE-TEST PASSED
Tests	✔️ 8 tests run
Summary	🟢 8 passed; 🟡 0 skipped
Duration	🕐 12 minutes, 36 seconds
Testomat.io Report	📊 Run #cbd173d3
Job	🗂️ Smoke Tests / smoke-test
Operating System	🖥️ Linux X64

✅ Passed Tests (8)

• Revoking an invite link (2 minutes, 58 seconds)
• User cancels their join request (1 minute, 18 seconds)
• User deletes the space and rejoins later (1 minute, 33 seconds)
• Owner changes the rights of a user from Viewer to Editor (1 minute, 47 seconds)
• Owner approves a join request with Editor permissions (1 minute, 28 seconds)
• Owner declines a join request (1 minute, 4 seconds)
• Owner removes a participant from the space (1 minute, 24 seconds)
• Sync on staging nodes (1 minute, 1 seconds)

[github-actions]

Previous Coverage	50.5% of statements
New Coverage	50.5% of statements
Patch Coverage	54.8% of changed statements (17/31)

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^{Coverage provided by https://github.com/seriousben/go-patch-cover-action}