Tables: fixed resizing columns when using multiple synched instances that are layed out at different X positions. (#7933)

TableGetMaxColumnWidth() was using MinX from previous column. Storing info in column. Still incorrect interleaved data for multi-instances but it covers majority of use cases.

Tables: fixed an issue detecting hovering column/row when using multiple synched instances layed out at different X positions. (#7933)

Was reading ClipRect from last frame.

Made BeginItemTooltip() and IsItemHovered() with delay flag infer an implicit ID using Pos only. (#7945, #1485, #143)

Perhaps a better approach would be to: store last non-zero ID + count successive zero ID and combine then.

Among other things:
- merged cfd23957 (#7940, #7823), also see ac64b656 (#6716): moved above on 2023/08/14 in both branches.
- moving the RenderDimmedBackgrounds() call, from f422e782, see 676497fe intently undoing ac64b656 -> confusing. (#6716)

Backends: GLFW: Emscripten: use OpenURL() when available and using EMSCRIPTEN_USE_PORT_CONTRIB_GLFW3. Fixes popup blocked in some browsers. (#7915, #7660)

Backends: SDL3: following SDL3 reverting their change, result of SDL_GetGamepads must be freed. (#7918, #7898, #7807)

Tabs: avoid queuing a refocus when tab is already focused, which would have the side-effect of e.g. closing popup on a mouse release. (#7914)

+ Debug Log: add details about closed popups.

Tables: another attempt at making contents not overlap the bottom and right border in a scrolling table. (#6765, #3752, #7428)

Tables: revert a3407187 extending outer bottom/right border by 1, this is not the right solution. (#6765, #3752)

Amend 7713c292 + renamed similar argument in other functions.

Tooltips, Drag and Drop: made it possible to override BeginTooltip() position while inside a drag and drop source or target. (#6973)

InputText: Internals: store Scroll.y as it seems sane to (internally) expose it in a way that's agnostic of our use of a child window (#7913, #383)

Backends: GLFW: undo accidentally not committing use of Platform_SetClipboardTextFn as I was testing the legacy path (amend 214977e5).

IO: (BREAKING) moved io.GetClipboardTextFn, io.SetClipboardTextFn to platform_io.Platform_GetClipboardTextFn, platform_io.Platform_SetClipboardTextFn.

IO: (BREAKING) moved io.PlatformLocaleDecimalPoint to platform_io.Platform_LocaleDecimalPoint. (#7389, #6719, #2278)

IO: (BREAKING) moved GetIO().PlatformOpenInShellFn to GetPlatformIO(.Platform_OpenInShellFn. (#7660)

+ tweak existing function to early out on error.

InputText: fixed an issue programmatically refocusing a multi-line input which was just active. (#4761, #7870)

Amend 66f0fb98, c5db2765

InputText: allow callback to update buffer while in read-only mode (fix for imgui_memory_editor 0.54 in read-only mode).

See https://github.com/ocornut/imgui_club/pull/46

Windows: adjust default ClipRect to better match rendering of thick borders. (#7887, #7888 + #3312, #7540, #3756, #6170, #6365)

Fonts: Made it possible to use PushFont()/PopFont() calls accross Begin() calls. (#3224, #3875, #6398, #7903)

IO: rework interleaved keys<>char trickling: only trickle for keys known to be likely to input characters. (#7889, #4921, #4858)

Amend fa2b318d. Refer to regression test "inputs_io_inputqueue" amended for IMGUI_VERSION_NUM >= 19102