Fix folder moving in file system dock

[Rindbee]

Include files in the folder that will be moved/renamed when looking up the file owner.

Fixed issue when moving/renaming directories, see #77289 (comment).

Rename the function/variable names to make more sense.

[KoBeWi]

It's still possible to break dependencies if you rename a folder (tested with inherited scenes).

Also doing specific steps, you can cause a crash:

================================================================
CrashHandlerException: Program crashed
Engine version: Godot Engine v4.2.dev.custom_build (4c3dc26367518e006f8555c12f5d2df0b8a28192)
Dumping the backtrace. Please include this when reporting the bug to the project developer.
[0] CowData<EditorFileSystemDirectory::FileInfo *>::_get_size (C:\godot_source\core\templates\cowdata.h:81)
[1] CowData<EditorFileSystemDirectory::FileInfo *>::size (C:\godot_source\core\templates\cowdata.h:134)
[2] Vector<EditorFileSystemDirectory::FileInfo *>::size (C:\godot_source\core\templates\vector.h:93)
[3] EditorFileSystemDirectory::get_file_count (C:\godot_source\editor\editor_file_system.cpp:91)
[4] FileSystemDock::_before_move (C:\godot_source\editor\filesystem_dock.cpp:1967)
[5] FileSystemDock::_rename_operation_confirm (C:\godot_source\editor\filesystem_dock.cpp:1780)
[6] call_with_variant_args_helper<FileSystemDock> (C:\godot_source\core\variant\binder_common.h:308)
[7] call_with_variant_args<FileSystemDock> (C:\godot_source\core\variant\binder_common.h:418)
[8] CallableCustomMethodPointer<FileSystemDock>::call (C:\godot_source\core\object\callable_method_pointer.h:105)
[9] Callable::callp (C:\godot_source\core\variant\callable.cpp:51)
[10] Object::emit_signalp (C:\godot_source\core\object\object.cpp:1118)
[11] Node::emit_signalp (C:\godot_source\scene\main\node.cpp:3596)
[12] Object::emit_signal<> (C:\godot_source\core\object\object.h:920)
[13] Tree::item_edited (C:\godot_source\scene\gui\tree.cpp:4342)
[14] Tree::_line_editor_submit (C:\godot_source\scene\gui\tree.cpp:3131)
[15] call_with_variant_args_helper<Tree,String,0> (C:\godot_source\core\variant\binder_common.h:308)
[16] call_with_variant_args<Tree,String> (C:\godot_source\core\variant\binder_common.h:418)
[17] CallableCustomMethodPointer<Tree,String>::call (C:\godot_source\core\object\callable_method_pointer.h:105)
[18] Callable::callp (C:\godot_source\core\variant\callable.cpp:51)
[19] Object::emit_signalp (C:\godot_source\core\object\object.cpp:1118)
[20] Node::emit_signalp (C:\godot_source\scene\main\node.cpp:3596)
[21] Object::emit_signal<String> (C:\godot_source\core\object\object.h:920)
[22] LineEdit::gui_input (C:\godot_source\scene\gui\line_edit.cpp:480)
[23] Control::_call_gui_input (C:\godot_source\scene\gui\control.cpp:1810)
[24] Viewport::_gui_input_event (C:\godot_source\scene\main\viewport.cpp:2236)
[25] Viewport::push_input (C:\godot_source\scene\main\viewport.cpp:3186)
[26] Window::_window_input (C:\godot_source\scene\main\window.cpp:1549)
[27] call_with_variant_args_helper<Window,Ref<InputEvent> const &,0> (C:\godot_source\core\variant\binder_common.h:303)
[28] call_with_variant_args<Window,Ref<InputEvent> const &> (C:\godot_source\core\variant\binder_common.h:418)
[29] CallableCustomMethodPointer<Window,Ref<InputEvent> const &>::call (C:\godot_source\core\object\callable_method_pointer.h:105)
[30] Callable::callp (C:\godot_source\core\variant\callable.cpp:51)
[31] DisplayServerWindows::_dispatch_input_event (C:\godot_source\platform\windows\display_server_windows.cpp:2628)
[32] DisplayServerWindows::_dispatch_input_events (C:\godot_source\platform\windows\display_server_windows.cpp:2605)
[33] Input::_parse_input_event_impl (C:\godot_source\core\input\input.cpp:751)
[34] Input::flush_buffered_events (C:\godot_source\core\input\input.cpp:1013)
[35] DisplayServerWindows::process_events (C:\godot_source\platform\windows\display_server_windows.cpp:2317)
[36] OS_Windows::run (C:\godot_source\platform\windows\os_windows.cpp:1474)
[37] widechar_main (C:\godot_source\platform\windows\godot_windows.cpp:182)
[38] _main (C:\godot_source\platform\windows\godot_windows.cpp:204)
[39] main (C:\godot_source\platform\windows\godot_windows.cpp:218)
[40] WinMain (C:\godot_source\platform\windows\godot_windows.cpp:232)
[41] __scrt_common_main_seh (D:\a\_work\1\s\src\vctools\crt\vcstartup\src\startup\exe_common.inl:288)
[42] <couldn't map PC to fn name>
-- END OF BACKTRACE --
================================================================

godot.windows.editor.dev.x86_64_hzSjn067Sn.mp4

(B inherits A)

[Rindbee]

It's still possible to break dependencies if you rename a folder (tested with inherited scenes).
Also doing specific steps, you can cause a crash:

to_move was not used when renaming.
Has been fixed, and rebased.

[akien-mga]

Thanks!