bazel: Mark an intermediate java_binary targets as non-executable

Executable `java_binary` targets, i.e., those that can be `bazel run` or
used in build actions, require a Java runtime for the target platform.
Since there is no standalone Java runtime for Android, all Java targets
in the transitive closure of an `android_binary` must not be executable
for cross-compilation to work.

Note: Cross-compilation without flags is currently blocked on
bazelbuild/bazel#17085.

src/main/java/com/code_intelligence/jazzer/BUILD.bazel

@@ -53,6 +53,7 @@ jar_jar(
 
 java_binary(
     name = "jazzer_unshaded",
+    create_executable = False,
     # Note: We can't add
     # //src/main/java/com/code_intelligence/jazzer/runtime:java_bootstrap_unshaded itself as
     # that would also strip out external dependencies common between Jazzer and its bootstrap jar,