fix(packages): Add label for private and internal package and fix composor package source permission check (#37610) (#37643)

Backport #37610 by @lunny

- Add permission checks for Composer package source links

- Add private/internal visibility labels for packages, similar to
repository visibility labels

<img width="969" height="571" alt="image"
src="https://github.com/user-attachments/assets/8a8ec3a0-bfbd-4dd6-b45b-58eda5db1a2d"
/>

- Add a link to change package visibility

<img width="1309" height="208" alt="image"
src="https://github.com/user-attachments/assets/3fa82b23-4c63-4a5e-b3f0-d37a103231ee"
/>

- Update link package descriptions

<img width="1308" height="265" alt="image"
src="https://github.com/user-attachments/assets/2c80b50e-5ffe-4d96-aedd-aa15964c4e05"
/>

---------

Co-authored-by: Lunny Xiao <xiaolunwen@gmail.com>
Co-authored-by: Nicolas <bircni@icloud.com>
Co-authored-by: silverwind <me@silverwind.io>

templates/package/shared/view.tmpl

@@ -1,6 +1,11 @@
 <div class="issue-title-header">
 	{{$packageVersionLink := print $.PackageDescriptor.PackageWebLink "/" (PathEscape .PackageDescriptor.Version.LowerVersion)}}
-	<h1>{{.PackageDescriptor.Package.Name}} ({{.PackageDescriptor.Version.Version}})</h1>
+	<div class="tw-flex tw-flex-wrap tw-items-center tw-gap-2">
+		<h1 class="tw-mb-0">{{.PackageDescriptor.Package.Name}} ({{.PackageDescriptor.Version.Version}})</h1>
+		<span class="label-list">
+			{{template "package/shared/visibility_badge" dict "Package" .PackageDescriptor.Package "Owner" .PackageDescriptor.Owner}}
+		</span>
+	</div>
 	<div>
 		{{$timeStr := DateUtils.TimeSince .PackageDescriptor.Version.CreatedUnix}}
 		{{if .HasRepositoryAccess}}