Godot version

Godot_v4.0-alpha1_linux.64

System information

recently updated arch linux

Issue description

When saving a new scene for the first time the default name (without extension) is the name of the root node of that scene but starting with a lowercase letter (even when the root node starts with an uppercase letter).

When saving a branch as a scene and the root of that branch starts with an uppercase letter, the default filename is the name of that branch root as it is, so with an uppercase letter.

I would expect the proposed default filename to be more consistent

Steps to reproduce

• Create a new project
• Create a root node called Main
• Save this scene. It will show main.tscn as default filename
• Create a child node called Player
• Save the Player branch as a scene. It will show Player.tscn as default filename.

Minimal reproduction project

No response