Fix lint errors under cts/tests/inputmethod

This CL only fixes check style errors under cts/tests/inputmethod.

There should be no behavior change.

Bug: 73077694
Test: prebuilts/checkstyle/checkstyle.py -f cts/tests/inputmethod
Change-Id: I2aa4d71727d850dac430a1726e6bf8bb36b50cec
29 files changed