fix: honor disableSidebar() and hideSubscribers() on CommentsEntry

[ItsMalikJones]

Summary

Fixes #84.

The notification sidebar kept rendering on the infolist CommentsEntry even when ->disableSidebar(true) or ->hideSubscribers(true) was set. This PR fixes the two wiring bugs behind that and adds end-to-end test coverage.

Problem

Two independent bugs caused the toggles to be silently ignored:

1. Mount-hook parameter mismatch. The Comments Livewire component's mountHasSidebar() hook expected a parameter named $enableSidebar, but every Blade view passes the prop as :sidebar-enabled — which Livewire camelCases to sidebarEnabled. The names never matched, so the hook always fell back to the commentions.subscriptions.show_sidebar config default, clobbering disableSidebar(). This affected both the infolist entry and the action modal.

2. Missing prop on the entry view. comments-entry.blade.php never passed :show-subscribers down to the Comments component, so hideSubscribers() was dropped entirely on the infolist entry. (comments-modal.blade.php already passed it correctly.)

Changes

• Rename the mountHasSidebar() parameter $enableSidebar → $sidebarEnabled in HasSidebar so it matches the prop name every Blade view actually passes.
• Thread :show-subscribers="$showSubscribers()" through comments-entry.blade.php, mirroring comments-modal.blade.php.
• Add tests:
  • tests/Filament/CommentsEntryTest.php — renders the real CommentsEntry inside a Filament schema and asserts both toggles take effect end-to-end.
  • tests/Livewire/CommentsSubscriptionTest.php — adds coverage for showSubscribers resolution and corrects a stale comment that described the bug as expected behavior.
• Register Filament's ActionsServiceProvider, SchemasServiceProvider, and InfolistsServiceProvider in tests/TestCase.php, required to render the infolist entry under test.