Fixes some AnimationPlayer bugs

Fix docs about item_selected and item_focused . Fixes #25273

Fix button alignment of Package Installer on OSX

This problem occurs only in the HiDPI environment.

Fix get_time_zone_info returning inverted bias on Windows/UWP

Hide the warning panel when no warnings presents.

Using codespell 1.14.0.

Method:
```
$ cat > ../godot-word-whitelist.txt << EOF
ang
doubleclick
lod
nd
numer
que
te
unselect
EOF
$ codespell -w -q 3 -I ../godot-word-whitelist.txt --skip="./thirdparty,*.po"
$ git diff // undo unwanted changes
```

Ensure classes match their header filename

Docs: Clarified TileMap get_cell method behavior.

[Core] [Mono] Transform2D rotation and scale fixes

Note: These are still not exposed to GDScript

Bug introduced in 9430e68c,
likely a typo.

Renamed:
- `modules/mono/mono_gd/gd_mono_class_member.h` -> `i_mono_class_member.h`
- `modules/upnp/upnpdevice.h` -> `upnp_device.h`
- `modules/websocket/websocket_multiplayer.h` -> `websocket_multiplayer_peer.h`

Fix state machine priority for auto advance

Fixes issue where ZIndex of converted CPUParticles2D is reset to zero

Also culling was reversed somehow.

EditorAudioBuses: Fix wrong tooltip for "Add Bus"

PluginConfigDialog: Slight usability changes

Also drop some unused files.

Renamed:
- `scene/2d/navigation2d.h` -> `navigation_2d.h`
- `scene/2d/screen_button.h` -> `touch_screen_button.h`
- `scene/3d/scenario_fx.h` -> `world_environment.h`
- `scene/audio/audio_player.h` -> `audio_stream_player.h`
- `scene/resources/bit_mask.h` -> `bit_map.h`
- `scene/resources/color_ramp.h` -> `gradient.h`
- `scene/resources/shape_line_2d.h` -> `line_shape_2d.h`
- `scene/resources/scene_format_text.h` -> `resource_format_text.h`
- `scene/resources/sky_box.h` -> `sky.h`

Dropped:
- `scene/resources/bounds.h`

Also drop some unused files.

Renamed:
- `platform/iphone/sem_iphone.h` -> `semaphore_iphone.h`
  (same for `osx`)
- `platform/uwp/gl_context_egl.h` -> `context_egl_uwp.h`
- in `platform/windows`: `context_gl_win.h`, `crash_handler_win.h`,
  `godot_win.cpp`, `joypad.h` and `key_mapping_win.h` all renamed to
  use `windows`. Some classes renamed accordingly too.
- `EditorExportAndroid` and `EditorExportUWP` renamed to
  `EditorExportPlatformAndroid` and `EditorExportPlatformUWP`
- `power_android` and `power_osx` renamed to `PowerAndroid` and
  `PowerOSX`
- `OSUWP` renamed to `OS_UWP`

Dropped:
- `platform/windows/ctxgl_procaddr.h`

- Set focus to the first LineEdit instead of the confirm button.
- Default to GDScript rather than whatever language was first
registered with the ScriptServer.

Use script instance binding for objects constructed from C#

Renamed:
- `drivers/alsamidi/alsa_midi.h` -> `midi_driver_alsamidi.h`
  (same for `coremidi` and `winmidi`)
- `main/timer_sync.h` -> `main_timer_sync.h`
- `servers/visual/visual_server_global.h` -> `visual_server_globals.h`