Do not run tests with LargeTest annotation in CI

[luizgrp]

WHAT

Do not run tests with LargeTest annotation in CI.

WHY

It was the intention of #304

However, it looks like they are still running as this recent PR failed with:

com.google.android.horologist.mediasample.playback.PlaybackNotificationTest > testCausesNotification[test(AVD) - 9] FAILED 
	expected to be true
	at com.google.android.horologist.mediasample.playback.PlaybackNotificationTest$testCausesNotification$1$1.invokeSuspend(PlaybackNotificationTest.kt:63)
Tests on test(AVD) - 9 failed: There was 1 failure(s).

And the test that failed is annotated with LargeTest.

[luizgrp]

Added a test annotated with LargeTest in #401 and confirmed that they are running in CI.
After cherry-picking commit from #402 it got green, so confirmed that the solution works and large tests will not run in CI after that commit.

[luizgrp]

Reopening as this build failed for a test annotated with LargeTest:

com.google.android.horologist.media.ui.screens.PlayerScreenTest > givenCustomControlButtons_thenCustomIsDisplayed[test(AVD) - 11] FAILED 
	java.lang.AssertionError: Activity never becomes requested state "[DESTROYED]" (last lifecycle transition = "RESUMED")
	at androidx.test.core.app.ActivityScenario.waitForActivityToBecomeAnyOf(ActivityScenario.java:338)

Can see in the logs that the IGNORE_LARGE_TESTS is true but SIZE_OPTS is not being set, so the resulting gradlew command does not contain the size filters:

IGNORE_LARGE_TESTS=true

+ SIZE_OPTS=
+ [[ -z true ]]
+ [[ ! -z true ]]

+ ./gradlew --scan --continue --no-configuration-cache --stacktrace --no-parallel runAffectedAndroidTests -Paffected_module_detector.enable -Pandroid.testInstrumentationRunnerArguments.numShards=2 -Pandroid.testInstrumentationRunnerArguments.shardIndex=0