Java: don't make loop variables final when splitting multiple declarations (IDEA-380295)

GitOrigin-RevId: 0d83b9f64eda019c7d0b2b75fd1221fe41a83877

java/java-tests/testData/ig/com/siyeh/igfixes/style/multiple_declaration/ForLoopInitializer.after.java

@@ -0,0 +1,9 @@
+class ForLoopInitializer {
+
+  public static void main(String[] args) {
+      int j;
+      for (int i = 0<caret>; i < 10; i++) {
+
+    }
+  }
+}

java/java-tests/testData/ig/com/siyeh/igfixes/style/multiple_declaration/ForLoopInitializer.java

@@ -0,0 +1,8 @@
+class ForLoopInitializer {
+
+  public static void main(String[] args) {
+    for (int i = 0, <caret>j; i < 10; i++) {
+
+    }
+  }
+}