Fixes flaky ZippedBugReportStreamTest

Dump hals tooks 4Xs in ZippedBugReportStreamTest. It resulted in
the test cannot meet the 60s criterion of the presubmit. Using the
limited only mode instead of wifi mode in the test to avoid invoking
the dump hals.

Bug: 184578081
Test: atest dumpstate_test
Change-Id: Id9fe957537b16825fa626b027a4113a42faa3670
1 file changed