FrameworksInputMethodSystemServerTests: Add to fw/base presubmit

Bug: 272633154
Change-Id: Id3628bf7f2bf2eda92dc0dd1289ea1664af77589
Test: atest FrameworksInputMethodSystemServerTests
diff --git a/TEST_MAPPING b/TEST_MAPPING
index 9610f2c..81a3479 100644
--- a/TEST_MAPPING
+++ b/TEST_MAPPING
@@ -65,6 +65,15 @@
       ]
     },
     {
+      "name": "FrameworksInputMethodSystemServerTests",
+      "options": [
+        {"include-filter": "com.android.server.inputmethod"},
+        {"exclude-annotation": "android.platform.test.annotations.FlakyTest"},
+        {"exclude-annotation": "androidx.test.filters.FlakyTest"},
+        {"exclude-annotation": "org.junit.Ignore"}
+      ]
+    },
+    {
       "name": "ExtServicesUnitTests",
       "options": [
         {