Memory leaks when opening empty project in editor

[qarmin]

Godot version:
4.0.dev.custom_build. d1231be

OS/device including version:
Ubuntu 20.04
Nvidia GTX 970 - 440

Issue description:
Leak Sanitizer log

ERROR: 1 shaders of type CanvasSdfShaderRD were never freed
   at: ~ShaderRD (servers/rendering/rasterizer_rd/shader_rd.cpp:470)
WARNING: 1 RIDs of type 'UniformBuffer' were leaked.
     at: _free_rids (drivers/vulkan/rendering_device_vulkan.cpp:7371)

=================================================================
==218397==ERROR: LeakSanitizer: detected memory leaks

Direct leak of 936 byte(s) in 3 object(s) allocated from:
    #0 0x7f92e36f1517 in malloc (/lib/x86_64-linux-gnu/libasan.so.6+0xb0517)
    #1 0x1242a5eb in Memory::alloc_static(unsigned long, bool) core/os/memory.cpp:76
    #2 0x1242a4ea in operator new(unsigned long, char const*) core/os/memory.cpp:41
    #3 0x114bb74a in RasterizerStorageRD::canvas_texture_get_uniform_set(RID, RenderingServer::CanvasItemTextureFilter, RenderingServer::CanvasItemTextureRepeat, RID, int, RID&, Vector2i&, Color&, bool&, bool&) servers/rendering/rasterizer_rd/rasterizer_storage_rd.cpp:1276
    #4 0x11bc5cbc in RasterizerCanvasRD::_bind_canvas_texture(long, RID, RenderingServer::CanvasItemTextureFilter, RenderingServer::CanvasItemTextureRepeat, RID&, RasterizerCanvasRD::PushConstant&, Vector2&) servers/rendering/rasterizer_rd/rasterizer_canvas_rd.cpp:332
    #5 0x11b56a21 in RasterizerCanvasRD::_render_item(long, RasterizerCanvas::Item const*, long, Transform2D const&, RasterizerCanvas::Item*&, RasterizerCanvas::Light*, RasterizerCanvasRD::PipelineVariants*) servers/rendering/rasterizer_rd/rasterizer_canvas_rd.cpp:455
    #6 0x11b6feb5 in RasterizerCanvasRD::_render_items(RID, int, Transform2D const&, RasterizerCanvas::Light*, bool) servers/rendering/rasterizer_rd/rasterizer_canvas_rd.cpp:1187
    #7 0x11b80838 in RasterizerCanvasRD::canvas_render_items(RID, RasterizerCanvas::Item*, Color const&, RasterizerCanvas::Light*, RasterizerCanvas::Light*, Transform2D const&, RenderingServer::CanvasItemTextureFilter, RenderingServer::CanvasItemTextureRepeat, bool, bool&) servers/rendering/rasterizer_rd/rasterizer_canvas_rd.cpp:1495
    #8 0x11a961a5 in RenderingServerCanvas::_render_canvas_item_tree(RID, RenderingServerCanvas::Canvas::ChildItem*, int, RenderingServerCanvas::Item*, Transform2D const&, Rect2 const&, Color const&, RasterizerCanvas::Light*, RasterizerCanvas::Light*, RenderingServer::CanvasItemTextureFilter, RenderingServer::CanvasItemTextureRepeat, bool) servers/rendering/rendering_server_canvas.cpp:72
    #9 0x11aa4519 in RenderingServerCanvas::render_canvas(RID, RenderingServerCanvas::Canvas*, Transform2D const&, RasterizerCanvas::Light*, RasterizerCanvas::Light*, Rect2 const&, RenderingServer::CanvasItemTextureFilter, RenderingServer::CanvasItemTextureRepeat, bool, bool) servers/rendering/rendering_server_canvas.cpp:328
    #10 0x10c1d8f7 in RenderingServerViewport::_draw_viewport(RenderingServerViewport::Viewport*, XRInterface::Eyes) servers/rendering/rendering_server_viewport.cpp:409
    #11 0x10c221ad in RenderingServerViewport::draw_viewports() servers/rendering/rendering_server_viewport.cpp:566
    #12 0x10aaf990 in RenderingServerRaster::draw(bool, double) servers/rendering/rendering_server_raster.cpp:115
    #13 0x10c63199 in RenderingServerWrapMT::draw(bool, double) servers/rendering/rendering_server_wrap_mt.cpp:91
    #14 0x1fa4159 in Main::iteration() main/main.cpp:2513
    #15 0x1e5a03f in OS_LinuxBSD::run() platform/linuxbsd/os_linuxbsd.cpp:261
    #16 0x1e4d030 in main platform/linuxbsd/godot_linuxbsd.cpp:58
    #17 0x7f92e24be0b2 in __libc_start_main (/lib/x86_64-linux-gnu/libc.so.6+0x270b2)

Direct leak of 36 byte(s) in 1 object(s) allocated from:
    #0 0x7f92e36f1517 in malloc (/lib/x86_64-linux-gnu/libasan.so.6+0xb0517)
    #1 0x1242a5eb in Memory::alloc_static(unsigned long, bool) core/os/memory.cpp:76
    #2 0x1242a4ea in operator new(unsigned long, char const*) core/os/memory.cpp:41
    #3 0x11ac1699 in RenderingServerCanvas::canvas_item_set_canvas_group_mode(RID, RenderingServer::CanvasGroupMode, float, bool, float, bool) servers/rendering/rendering_server_canvas.cpp:1066
    #4 0x10af71ae in RenderingServerRaster::canvas_item_set_canvas_group_mode(RID, RenderingServer::CanvasGroupMode, float, bool, float, bool) servers/rendering/rendering_server_raster.h:749
    #5 0x10d7c29c in RenderingServerWrapMT::canvas_item_set_canvas_group_mode(RID, RenderingServer::CanvasGroupMode, float, bool, float, bool) servers/rendering/rendering_server_wrap_mt.h:650
    #6 0xe43ae14 in CanvasGroup::set_fit_margin(float) scene/2d/canvas_group.cpp:37
    #7 0xe43ea36 in CanvasGroup::CanvasGroup() scene/2d/canvas_group.cpp:84
    #8 0xc54f680 in Object* ClassDB::creator<CanvasGroup>() core/object/class_db.h:146
    #9 0x1344fefb in ClassDB::instance(StringName const&) core/object/class_db.cpp:521
    #10 0x13465eed in ClassDB::class_get_default_property_value(StringName const&, StringName const&, bool*) core/object/class_db.cpp:1481
    #11 0x80854ee in get_documentation_default_value editor/doc_tools.cpp:210
    #12 0x8088365 in DocTools::generate(bool) editor/doc_tools.cpp:301
    #13 0x8410183 in EditorHelp::generate_doc() editor/editor_help.cpp:1622
    #14 0x86e1c86 in EditorNode::EditorNode() editor/editor_node.cpp:5547
    #15 0x1f926df in Main::start() main/main.cpp:2134
    #16 0x1e4cf63 in main platform/linuxbsd/godot_linuxbsd.cpp:57
    #17 0x7f92e24be0b2 in __libc_start_main (/lib/x86_64-linux-gnu/libc.so.6+0x270b2)

Steps to reproduce:

1. Open empty project in editor with Godot compiled with Leak sanitizer or in Valgrind