Limit lengths of fields in Condition to a max length.

This app-generated input needs to not be too long to avoid errors in the process of writing to disk.

Bug: 242846316
Test: cts ConditionTest; atest ConditionTest; manually verified exploit apk is OK

Change-Id: Ic2fa8f06cc7a4c1f262115764fbd1be2a226b4b9