Fixes concaveshape not selecting in viewport

This PR resolves the issue of ConcaveShapes not being selectable in the Viewport.

Added sampler port to CubeMap, fixed parsing in expresssions

Don't use to_utf8() and to_ascii() on empty String

Android: Work around crash in _fix_manifest

Works around #32553, not fixing the underlying cause but
preventing the crash.

Move grid snapping to an independent button

WebSocket improvements, SSL server, custom headers.

Fixed inserting text at caret not updating scrollbar size

Fix decompress PoolByteArray crash

Added documentation for Skeleton2D

Remove unused editor/OutputStrings

C#: Fix detection of outdated release Godot API assemblies

Remove redundant `camelcase_to_underscore()` call in EditorInspector

Fixed ScriptEditor autosave timer causing errors on start

Calling `String::capitalize()` already calls
`String::camelcase_to_underscore()` under the hood.

Fixes #32685

Decrease polling frequency to 20 Hz in the GDScript language server

This decreases the language server's CPU usage.

Prevents folding of member tree on drag&drop in visual shader

Uses LoD even if UV slot is not used in visual shader textures

Validate array indexes in StyleBox

Removed "rebuild" function from public interface of VisualShader

Add shortcut Shift + F3 to search pervious in the built-in docs

When using the built-in docs, Godot would not support the shortcut "Shift + F3"
to search for the previous occurrence of the search entry text, thus causing an
inconsistent behaviour when using shortcuts in the "ScriptEditor" compared to
using them in the "ScriptTextEditor".

The previous parameter of the function "EditorHelp::_search()" in the class
"editor_help" seems to be unused, thus replaced with a bool representing to
search for previous search entry text or not. By adding the shortcut to
Godot's "ScriptEditor", this commit now improves Godot's consistensy when
using shortcuts.

Fixes #31147.
Co-Authored-By: Oscar Ferm <oscfer-6@student.ltu.se>

Makes cubemaps to be works in visual shaders

Remove editor dependency

- Add or remove the necessary subdirectorires to the includes to remove
dependency on the editor directory being in the build's include path.
- Ensure includes in modified files conform to style guideline.
- Remove editor from the build include path.