fix(lsp/java): on-demand imports cause definition and reference providers to fail (fixes #1449, #1211)

testing/resources/test-project/app/src/main/resources/utils/FindHelperRegexElements_template.java

@@ -0,0 +1,16 @@
+package com.itsaky.androidide.lsp.java.test;
+
+import java.util.*;
+
+public class Main {
+
+  private String field;
+
+  public static void main(String[] args) {
+    field = "Hello World!";
+
+    System.out.println(field);
+
+    final var list = new ArrayList<String>();
+  }
+}