Increase timeout to fix failing tests

Some MediaRouter2HostSideTest cases use the Output Switcher to change
routing and then wait to observe the effects, and these tests were
sometimes timing out (mostly on older and virtual devices) before the
dialog could be scrolled to find and click on the right entry.

Bug: 444975852
Test: atest MediaRouter2HostSideTest
Flag: EXEMPT TEST_ONLY
Cherrypick-From: https://googleplex-android-review.googlesource.com/q/commit:ebffbb9c0b861890b56074ae50e2aaf0a59804f7
Merged-In: I54a9ba438d6ea211389b143649f893d08d501b7c
Change-Id: I54a9ba438d6ea211389b143649f893d08d501b7c
1 file changed