[TTS] Disable a flaky test except for P+

BUG=1048827

TBR=mastiz@chromium.org

Change-Id: I95387295890b0df545a03314f55e822503a36eba
Reviewed-on: https://chromium-review.googlesource.com/c/chromium/src/+/2084715
Commit-Queue: Donn Denman <donnd@chromium.org>
Reviewed-by: Mikel Astiz <mastiz@chromium.org>
Reviewed-by: Donn Denman <donnd@chromium.org>
Cr-Commit-Position: refs/heads/master@{#746463}

chrome/android/javatests/src/org/chromium/chrome/browser/contextualsearch/ContextualSearchManagerTest.java

@@ -3230,12 +3230,11 @@ public class ContextualSearchManagerTest {
 
     @Test
     @SmallTest
-    @Restriction(UiRestriction.RESTRICTION_TYPE_PHONE)
     @Feature({"ContextualSearch"})
     // clang-format off
     @Features.EnableFeatures("ContextualSearchLongpressResolve")
-    @DisableIf.Build(sdk_is_less_than = Build.VERSION_CODES.M,
-        message = "Flaky < M, https://crbug.com/1048827")
+    @DisableIf.Build(sdk_is_less_than = Build.VERSION_CODES.P,
+        message = "Flaky < P, https://crbug.com/1048827")
     public void testLongpressExtendinSelectionExactResolve() throws TimeoutException {
         // clang-format on
         // First test regular long-press.  It should not require an exact resolve.