Disable flag for ClipboardModelTest

With the flag turned on, the 'imageClipData_loadFailure' test is
irrelevant; disabling the flag for now and once the flag is rolled out
the test can be removed.

Flag: EXEMPT fixing test failure
Bug: 357197236
Test: atest ClipboardModelTest
Change-Id: I2ca20fe4810d06a617f107004552c9132ce5c672
diff --git a/packages/SystemUI/tests/src/com/android/systemui/clipboardoverlay/ClipboardModelTest.kt b/packages/SystemUI/tests/src/com/android/systemui/clipboardoverlay/ClipboardModelTest.kt
index 85e8ab4..5741d64 100644
--- a/packages/SystemUI/tests/src/com/android/systemui/clipboardoverlay/ClipboardModelTest.kt
+++ b/packages/SystemUI/tests/src/com/android/systemui/clipboardoverlay/ClipboardModelTest.kt
@@ -122,6 +122,7 @@
 
     @Test
     @Throws(IOException::class)
+    @DisableFlags(FLAG_CLIPBOARD_USE_DESCRIPTION_MIMETYPE)
     fun test_imageClipData_loadFailure() {
         whenever(mMockContext.contentResolver).thenReturn(mMockContentResolver)
         whenever(mMockContext.resources).thenReturn(mContext.resources)