Animation tree is broken

[enemy141]

Godot version

3.5.1 rc1

System information

Windows 10 GLES3

Issue description

Godot crashes when I'm trying to change the name of animation in the animation tree and go back to the root at the same time.

Steps to reproduce

2022-09-10.12-38-58.mp4

Minimal reproduction project

No response

[dzil123]

================================================================
handle_crash: Program crashed with signal 11
Engine version: Godot Engine v4.0.alpha.custom_build (c658fa8b77eb701ddb504cba14fe2c966b7bb105)
Dumping the backtrace. Please include this when reporting the bug to the project developer.
[1] /lib64/libc.so.6(+0x4eb20) [0x7f91fc68bb20] (??:0)
[2] HashMap<StringName, AnimationNodeBlendTree::Node, HashMapHasherDefault, HashMapComparatorDefault<StringName>, DefaultTypedAllocator<HashMapElement<StringName, AnimationNodeBlendTree::Node> > >::begin() const (godot/./core/templates/hash_map.h:481)
[3] AnimationNodeBlendTree::get_node_name(Ref<AnimationNode> const&) const (godot/scene/animation/animation_blend_tree.cpp:871)
[4] AnimationNodeBlendTreeEditor::_node_renamed(String const&, Ref<AnimationNode>) (godot/editor/plugins/animation_blend_tree_editor_plugin.cpp:910)
[5] AnimationNodeBlendTreeEditor::_node_renamed_focus_out(Node*, Ref<AnimationNode>) (godot/editor/plugins/animation_blend_tree_editor_plugin.cpp:985 (discriminator 8))
[6] void call_with_variant_args_helper<AnimationNodeBlendTreeEditor, Node*, Ref<AnimationNode>, 0ul, 1ul>(AnimationNodeBlendTreeEditor*, void (AnimationNodeBlendTreeEditor::*)(Node*, Ref<AnimationNode>), Variant const**, Callable::CallError&, IndexSequence<0ul, 1ul>) (godot/./core/variant/binder_common.h:262 (discriminator 8))
[7] void call_with_variant_args<AnimationNodeBlendTreeEditor, Node*, Ref<AnimationNode> >(AnimationNodeBlendTreeEditor*, void (AnimationNodeBlendTreeEditor::*)(Node*, Ref<AnimationNode>), Variant const**, int, Callable::CallError&) (godot/./core/variant/binder_common.h:377)
[8] CallableCustomMethodPointer<AnimationNodeBlendTreeEditor, Node*, Ref<AnimationNode> >::call(Variant const**, int, Variant&, Callable::CallError&) const (godot/./core/object/callable_method_pointer.h:104)
[9] Callable::callp(Variant const**, int, Variant&, Callable::CallError&) const (godot/core/variant/callable.cpp:50)
[10] CallableCustomBind::call(Variant const**, int, Variant&, Callable::CallError&) const (godot/core/variant/callable_bind.cpp:100)
[11] Callable::callp(Variant const**, int, Variant&, Callable::CallError&) const (godot/core/variant/callable.cpp:50)
[12] MessageQueue::_call_function(Callable const&, Variant const*, int, bool) (godot/core/object/message_queue.cpp:230)
[13] MessageQueue::flush() (godot/core/object/message_queue.cpp:277)
[14] SceneTree::process(double) (godot/scene/main/scene_tree.cpp:469)
[15] Main::iteration() (godot/main/main.cpp:3005)
[16] OS_LinuxBSD::run() (godot/platform/linuxbsd/os_linuxbsd.cpp:538)
[17] bin/godot.linuxbsd.tools.x86_64(main+0x146) [0x259ebac] (godot/platform/linuxbsd/godot_linuxbsd.cpp:74)
[18] /lib64/libc.so.6(__libc_start_main+0xf3) [0x7f91fc677cf3] (??:0)
[19] bin/godot.linuxbsd.tools.x86_64(_start+0x2e) [0x259e9ae] (??:?)
-- END OF BACKTRACE --
================================================================
Aborted (core dumped)