[fenix] For https://github.com/mozilla-mobile/fenix/issues/21138: re-enable excessive resource use test.

This test wasn't running in CI
https://github.com/mozilla-mobile/fenix/issues/20386 so we changed the
CI configuration so that it will. However, the test was then failing so
this is the revision that unignores the test.

I wonder if componentInit count is useful - it seems like it'd cause
more false positives than not - but I figure we can leave it in and see
how it goes.

app/src/androidTest/java/org/mozilla/fenix/perf/StartupExcessiveResourceUseTest.kt

@@ -14,7 +14,6 @@ import androidx.recyclerview.widget.RecyclerView
 import androidx.test.platform.app.InstrumentationRegistry
 import androidx.test.uiautomator.UiDevice
 import org.junit.Assert.assertEquals
-import org.junit.Ignore
 import org.junit.Rule
 import org.junit.Test
 import org.mozilla.fenix.R
@@ -22,9 +21,9 @@ import org.mozilla.fenix.ext.components
 import org.mozilla.fenix.helpers.HomeActivityTestRule
 
 // BEFORE INCREASING THESE VALUES, PLEASE CONSULT WITH THE PERF TEAM.
-private const val EXPECTED_SUPPRESSION_COUNT = 11
-private const val EXPECTED_RUNBLOCKING_COUNT = 3
-private const val EXPECTED_COMPONENT_INIT_COUNT = 42
+private const val EXPECTED_SUPPRESSION_COUNT = 19
+private const val EXPECTED_RUNBLOCKING_COUNT = 0
+private const val EXPECTED_COMPONENT_INIT_COUNT = 50
 private const val EXPECTED_VIEW_HIERARCHY_DEPTH = 12
 private const val EXPECTED_RECYCLER_VIEW_CONSTRAINT_LAYOUT_CHILDREN = 4
 private const val EXPECTED_NUMBER_OF_INFLATION = 12
@@ -83,7 +82,6 @@ class StartupExcessiveResourceUseTest {
 
     private val uiDevice = UiDevice.getInstance(InstrumentationRegistry.getInstrumentation())
 
-    @Ignore("See: https://github.com/mozilla-mobile/fenix/pull/20841#issuecomment-898630241c")
     @Test
     fun verifyRunBlockingAndStrictModeSuppresionCount() {
         uiDevice.waitForIdle() // wait for async UI to load.