Backends: Vulkan: ImGui_ImplVulkan_CreateWindow() amend merge to take account of PipelineRenderingCreateInfo change. (#7166, #6855, #5446, #5037)

# Conflicts:
#	backends/imgui_impl_dx9.cpp
#	backends/imgui_impl_sdl2.cpp
#	backends/imgui_impl_sdl3.cpp
#	backends/imgui_impl_vulkan.cpp
#	imgui.cpp

Backends:,Examples: Vulkan: moved RenderPass parameter from ImGui_ImplVulkan_Init() function to ImGui_ImplVulkan_InitInfo structure. (#7308)

Backends: SDL2: removed obsolete ImGui_ImplSDL2_NewFrame(SDL_Window*) signature which was obsoleted in 1.84..

Backends: SDL3: Fixed gamepad. Added support for disconnection. Added support for multiple gamepads. Added ImGui_ImplSDL3_SetGamepadMode(). (#7180, #3884, #6559, #6890)

Code is simpler this way.

Amend daf49e9d

Backends: SDL2: Handle gamepad disconnection + fixed increasing refcount. Added  ImGui_ImplSDL2_SelectGamepadAuto()/ImGui_ImplSDL2_SelectGamepadExplicit(). (#3884, #6559, #6890)

Backends: Vulkan: use PipelineRenderingCreateInfo for dynamic rendering (#7166, #6855, #5446, #5037)

Menus, Popups: fixed menus and popups with child window flag erroneously not displaying a scrollbar when contents is over parent viewport size. (#7287, #7063)

Amend f37f6f67

Backends: SDLRenderer3: query newly added SDL_RenderViewportSet() to not restore a wrong viewport if none was initially set.

https://github.com/libsdl-org/SDL/issues/9029

# Conflicts:
#	imgui.cpp

Added ImGuiViewport ID in Master branch.

Viewports: Fixed moving accross monitors when io.ConfigWindowsMoveFromTitleBarOnly is set. (#7299, #3071)

Said test seems unnecessary and incorrect as we test hierarchy now. See test "nav_ctrl_tab_popups" in ImGuiTestSuite.

InputText: Internal: ReloadUserBufXXX functions don't override revert value. (#2890) fix accidental comment.

Nav: tweak RenderNavHighlight() syntax. ImGuiNavHighlightFlags_TypeThin -> ImGuiNavHighlightFlags_Compact.

OpenPopup(): Added ImGuiPopupFlags_NoReopen. Nav, Menus: Fixed click on a BeginMenu() followed by right-arrow. (#1497, #1533)

  reopen

# Conflicts:
#	backends/imgui_impl_glfw.cpp

Very highly requested feature (#6962, #5219, #3290, #4627, #5054, #3878, #2881, #1506, #1216, #968).
Also useful for interactive completion/selection popups (#2057, #718)
Based on @kudaba PR. Design for Inputtext V2 should make this obsolete.

Nav: Improve handling of Alt key to toggle menu so that key ownership may be claimed on indiviudal left/right alt key without intefering with the other.

See test "inputs_owner_single_mod"