fix navigation on recent JDTLS: accept both class and java files in jdt uris

[sideshowcoder]

In a recent version of JDTLS the jsonrpc is returing .java files directly instead of the .class files for the navigation query, only including the .class as part of the query string of the URI, to keep the regex compatible this accepts both either .class or .java files, formatting the source file name correctly as PACKAGE/FILENAME.java either way.

The JSON RPC responses are now including the jdt uri with the Java file, with the class file as part of the query string of the URI, which is not matched by the regex.

[jsonrpc] e[15:00:41.429]   <-- textDocument/definition[60] {
  "jsonrpc": "2.0",
  "id": 60,
  "result": [
    {
      "uri": "jdt://contents/slf4j-api-2.0.17.jar/org.slf4j/LoggerFactory.java?=dropwizard-openfeature/%5C/home%5C/pfehre%5C/.m2%5C/repository%5C/org%5C/slf4j%5C/slf4j-api%5C/2.0.17%5C/slf4j-api-2.0.17.jar=/maven.pomderived=/true=/=/javadoc_location=/jar:file:%5C/home%5C/pfehre%5C/.m2%5C/repository%5C/org%5C/slf4j%5C/slf4j-api%5C/2.0.17%5C/slf4j-api-2.0.17-javadoc.jar%5C!%5C/=/=/maven.groupId=/org.slf4j=/=/maven.artifactId=/slf4j-api=/=/maven.version=/2.0.17=/=/maven.scope=/compile=/=/maven.pomderived=/true=/%3Corg.slf4j%28LoggerFactory.class",
      "range": {
        "start": {
          "line": 69,
          "character": 19
        },
        "end": {
          "line": 69,
          "character": 32
        }
      }
    }
  ]
}

This fixes this so both .java and .class are accepted for backwards compatibility to older JDTLS versions.