feat: undo delete action

[JammingBen]

Adds an action that lets users undo a delete via the delete notification or keyboard shortcut ctrl/cmd + Z.

Also removes the info icon on notifications as it doesn't really provide any value and just adds noise.

closes #1357

[Copilot]

Pull Request Overview

This PR implements an undo delete functionality for files, allowing users to restore recently deleted items through notification actions or a keyboard shortcut (Ctrl/Cmd + Z). It also removes the info icon from notifications to reduce visual noise.

Key changes:

• Added undo delete action that appears in delete notifications
• Implemented keyboard shortcut (Ctrl/Cmd + Z) for undoing deletes
• Enhanced notification system to support action buttons
• Removed info icon from notifications by default

Reviewed Changes

Copilot reviewed 10 out of 10 changed files in this pull request and generated 3 comments.

Show a summary per file

File	Description
MessageBar.vue	Added action slot and disabled info icon display
useFileActionsDeleteResources.ts	Integrated undo functionality with delete operations and keyboard shortcuts
useFileActionsUndoDelete.ts	New composable implementing the undo delete action
useFileActionsRestore.ts	Added options for customizing success messages and completion callbacks
messages.ts	Extended Message interface to support actions
useKeyboardActions.ts	Added Z key constant for keyboard shortcuts
OcNotificationMessage.vue	Added actions slot and showInfoIcon prop
OcTooltip.ts	Increased z-index for tooltip display

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[JammingBen]

Fyi I disabled the shortcut label for now. Having it included in the label looks to crowded in the notification message. Implementing it as tooltip would require some general refactoring because our general Action component & interface don't support this.

[AlexAndBear]

🥇