revert: add restriction callback to restrict visibility and modification of widget kinds"

[Meierschlumpf]

Reverts #2658
The reason is that with next 15.2+ there can not be any dependency loops. And with the two usages of widgetImports in old-import and api package this would be the case api -> widget -> api.

See https://discord.com/channels/972958686051962910/973659470183956610/1355490224729231390 for further details

Error from nextjs:

@homarr/nextjs:dev: FATAL: An unexpected Turbopack error occurred. Please report the content of C:\Users\meier\AppData\Local\Temp\next-panic-12b7ebb83ff1914cfaa80142b275ce1c.log, along with a description of what you were doing when the error occurred, to https://github.com/vercel/next.js/issues/new?template=1.bug_report.yml

[deepsource-io]

Here's the code health analysis summary for commits d1b14ac..e5f53ce. View details on DeepSource ↗.

Analysis Summary

Analyzer	Status	Summary	Link
JavaScript	✅ Success	🎯 1 occurence resolved	View Check ↗

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[github-actions]

Coverage Report

Status	Category	Percentage	Covered / Total
🔵	Lines	22.18%	10040 / 45260
🔵	Statements	22.18%	10040 / 45260
🔵	Functions	29.9%	427 / 1428
🔵	Branches	63.72%	1235 / 1938

File Coverage

File	Stmts	Branches	Functions	Lines	Uncovered Lines
Changed Files
apps/nextjs/src/components/board/items/item-content.tsx	0%	0%	0%	0%	1-120
apps/nextjs/src/components/board/items/item-menu.tsx	0%	0%	0%	0%	1-126
apps/nextjs/src/components/board/items/item-select-modal.tsx	0%	0%	0%	0%	1-107
packages/api/src/router/board.ts	59.84%	80.85%	82.35%	59.84%	52-60, 63-70, 76-101, 177-246, 296-507, 526-530, 543-545, 548-550, 558, 748-944, 966-986, 1102-1117, 1206, 1225, 1236-1251, 1256-1257, 1279-1294, 1299-1300, 1319-1321, 1346-1348, 1439-1440, 1464-1465, 1569-1573, 1630-1631, 1639-1640
packages/api/src/router/import/import-router.ts	71.87%	100%	100%	71.87%	18, 29-34, 40-41
packages/auth/permissions/index.ts	100%	100%	100%	100%
packages/old-import/src/index.ts	25%	100%	0%	25%	8-13
packages/old-import/src/import/import-initial-oldmarr.ts	5.55%	100%	0%	5.55%	17-56
packages/old-import/src/import/import-single-oldmarr.ts	6.66%	100%	0%	6.66%	12-42
packages/old-import/src/import/collections/board-collection.ts	15.45%	88.88%	50%	15.45%	19-128
packages/widgets/src/definition.ts	100%	100%	100%	100%

Generated in workflow #5744 for commit e5f53ce by the Vitest Coverage Report Action