fix: add proper ACLs for trashbin proxys

[hamza221]

• Resolves: [Bug]: Delegated calendars - Node with name 'trashbin' could not be found #42051

Summary

Add proper ACLs for proxys

How I tested

1. Delegate User1 calendar to admin

curl -X PROPPATCH 'http://nextcloud.local/remote.php/dav/principals/users/user2/calendar-proxy-write' \
  -u 'user2:user2' \
  -H 'Content-Type: application/xml' \
  -b 'XDEBUG_SESSION=PHPSTORM' \
  --data-binary @- <<'EOF'
<?xml version="1.0" encoding="utf-8" ?>
<D:propertyupdate xmlns:D="DAV:">
	<D:set>
		<D:prop>
			<D:group-member-set>
				<D:href>/remote.php/dav/principals/users/admin</D:href>
			</D:group-member-set>
		</D:prop>
	</D:set>
</D:propertyupdate>

2. enable delegation on the client

3. Connect admin to an external client that supports delegation (Apple calendar)

4. apply patch

Checklist

• Code is properly formatted
• Sign-off message is added to all commits
• Tests (unit, integration, api and/or acceptance) are included
• Screenshots before/after for front-end changes
• Documentation (manuals or wiki) has been updated or is not required
• Backports requested where applicable (ex: critical bugfixes)
• Labels added where applicable (ex: bug/enhancement, 3. to review, feature component)
• Milestone added for target branch/version (ex: 32.x for stable32)

AI (if applicable)

• The content of this PR was partly or fully generated using AI

[ChristophWurst]

/backport to stable33

[ChristophWurst]

/backport to stable32

[hamza221]

/backport to stable33

[hamza221]

/backport to stable32

[hamza221]

@ChristophWurst didn't see your comments :'(

[hamza221]

reuse unrelated #60205

The following files have no copyright and licensing information:
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* apps/appstore/l10n/bg.json
* apps/appstore/l10n/cs.js
* apps/appstore/l10n/cs.json
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* apps/appstore/l10n/es_CO.json
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* apps/appstore/l10n/es_CR.json
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* apps/appstore/l10n/es_DO.json
* apps/appstore/l10n/es_EC.js
* apps/appstore/l10n/es_EC.json
* apps/appstore/l10n/es_GT.js
* apps/appstore/l10n/es_GT.json
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* apps/appstore/l10n/es_HN.json
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* apps/appstore/l10n/es_NI.json
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* apps/appstore/l10n/es_PA.json
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* apps/appstore/l10n/es_PY.json
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* apps/appstore/l10n/et_EE.json
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* apps/appstore/l10n/fi.json
* apps/appstore/l10n/hu.js
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* apps/appstore/l10n/ka_GE.json
* apps/appstore/l10n/lt_LT.js
* apps/appstore/l10n/lt_LT.json
* apps/appstore/l10n/nb.js
* apps/appstore/l10n/nb.json
* apps/appstore/l10n/pt_PT.js
* apps/appstore/l10n/pt_PT.json
* apps/appstore/l10n/sc.js
* apps/appstore/l10n/sc.json
* apps/appstore/l10n/sk.js
* apps/appstore/l10n/sk.json

[hamza221]

rebased for green CI