[GLUTEN-CORE] ResourceUtil fails to load JARs from paths with special characters (URL-encoded)

[clee704]

Description

ResourceUtil.getResources() fails when Gluten is loaded from a JAR file located in a directory with special characters in its path (such as @, spaces, or other characters that get percent-encoded in URLs).

Root Cause

ClassLoader.getResources() returns URL objects where special characters are percent-encoded (e.g., @ → %40). ResourceUtil passes these URL-encoded paths directly to new File(url.getPath()), which expects filesystem paths, not URL-encoded strings. This causes File.exists() to return false, resulting in a GlutenException.

Example

When JARs are cached in a path like:

~/.cache/coursier/v1/https/user%40domain.pkgs.visualstudio.com/project/_packaging/feed/maven/v1/org/apache/gluten/gluten-package/...

The %40 in the path causes ResourceUtil to look for a non-existent directory/file.

Fix

Use URL.toURI() and new File(URI) which properly decode percent-encoded characters, while also correctly preserving + characters (unlike URLDecoder.decode() which treats + as space).

PR: #11672