Fix editor shortcuts during play mode

[Gopmyc]

Description

Prevents editor keyboard shortcuts from running outside edit mode, so Ctrl+S and related scene shortcuts no longer affect the runtime scene while playing.

Related Issue(s)

Fixes #804

Review Guidance

Check the edit-mode guards in Editor::Update and MenuBar::HandleShortcuts.

Screenshots/GIFs

N/A

AI Usage Disclosure

N/A

Checklist

• My code follows the project's code style guidelines
• When applicable, I have commented my code, particularly in hard-to-understand areas
• When applicable, I have updated the documentation accordingly
• My changes don't generate new warnings or errors
• I have reviewed and take responsibility for all code in this PR (including any AI-assisted contributions)

[adriengivry]

Most of these shortcuts should remain available even in play mode.
We should always be able to:

• Change scene (CTRL + N)
• Delete an object
• etc..

The only actions to disable are EditorActions::SaveSceneChanges() and EditorActions::SaveAs().

Adding this to both these functions should suffice:

if (m_editorMode != EEditorMode::EDIT)
{
    return;
}

[Gopmyc]

Most of these shortcuts should remain available even in play mode. We should always be able to:

• Change scene (CTRL + N)
• Delete an object
• etc..

The only actions to disable are EditorActions::SaveSceneChanges() and EditorActions::SaveAs().

Adding this to both these functions should suffice:

if (m_editorMode != EEditorMode::EDIT)
{
    return;
}

Indeed…
It's fixed !