tsan: restore Initialize call in Java entry points

[dvyukov]

Summary

We used to call Initialize in every Java point.
That was removed in 6563bb53b5 ("tsan: don't use caller/current PC in Java interfaces").
The intention was to add a single Initialize to __tsan_java_init instead.
Do that.

compiler-rt/lib/tsan/rtl/tsan_interface_java.cpp

 }  // namespace __tsan
 
 #define JAVA_FUNC_ENTER(func)      \
   ThreadState *thr = cur_thread(); \
   (void)thr;
 
 void __tsan_java_init(jptr heap_begin, jptr heap_size) {
   JAVA_FUNC_ENTER(__tsan_java_init);
+  Initialize(thr);
   DPrintf("#%d: java_init(%p, %p)\n", thr->tid, heap_begin, heap_size);
   CHECK_EQ(jctx, 0);
   CHECK_GT(heap_begin, 0);
   CHECK_GT(heap_size, 0);
   CHECK_EQ(heap_begin % kHeapAlignment, 0);
   CHECK_EQ(heap_size % kHeapAlignment, 0);
   CHECK_LT(heap_begin, heap_begin + heap_size);
   jctx = new(jctx_buf) JavaContext(heap_begin, heap_size);