Double the timeout in liblog.wrap_mode_blocks.

This was original 30s, but brought down to 5s to show that the original
problem this test was written for no longer exists. Unfortunately, we
have an alleged 1.55% flake rate that I'm assuming is just the usual "CI
bots overloaded". Double the timeout and see if it goes away.

Bug: http://b/288327076
Test: treehugger
Change-Id: I874a0d26990237565ab329904255840cff4d6b59
1 file changed
tree: 975f169f6587d8e7d555f4fe5b3a7132a6072f03
  1. liblog/
  2. logcat/
  3. logd/
  4. logwrapper/
  5. rust/
  6. OWNERS
  7. PREUPLOAD.cfg
  8. TEST_MAPPING