Create CTS API test for EditorInfo#AutofillId.

Following guidance of go/android-flags-howto-apis#javadoc, the javadoc doesn't use @link to refer to the API.

CtsInputMethodTestCases test suit pass on ABTD, run link: https://android-build.corp.google.com/builds/abtd/run/L39700030007509970

Bug: b/342672560
Change-Id: I51c33444ad2f51ed1379fdcbc0f53eb67a67198a
Flag: TEST_ONLY
Test: atest CtsInputMethodTestCases