Restore cast in possibly important context; fix ReplaceInefficientStreamCount tests

GitOrigin-RevId: 84ef59c2941462b3060c31cfea85f90ee6d39af8

java/java-tests/testData/inspection/inefficientStreamCount/afterStreamCount.java

@@ -5,6 +5,6 @@ import java.util.Arrays;
 class Test {
   long cnt() {
       /*count*/
-      return (long) Arrays.asList('d', 'e', 'f')./*stream*/size()/*after*/;
+      return Arrays.asList('d', 'e', 'f')./*stream*/size()/*after*/;
   }
 }

java/java-tests/testData/inspection/inefficientStreamCount/afterStreamCountField.java

@@ -4,5 +4,5 @@ import java.util.Arrays;
 
 class Test {
     /*count*/
-    long cnt = (long) Arrays.asList('d', 'e', 'f')./*stream*/size()/*after*/;
+    long cnt = Arrays.asList('d', 'e', 'f')./*stream*/size()/*after*/;
 }

java/java-tests/testData/inspection/inefficientStreamCount/afterStreamCountParameter.java

@@ -7,6 +7,6 @@ public class Main {
     public static long test() {
         List<String> s = new ArrayList<>();
         /* unused parameter */
-        return (long) s.size();
+        return s.size();
     }
 }