Update AndroidLeakFixes.kt

[GeorgCantor]

Streamlined Condition Checks:
The check for Application is unnecessary since if context is an instance of Application, it will not be an instance of Activity or ContextWrapper. Therefore, we only check for ContextWrapper in the loop.

Reduced Redundant Checks:
Instead of checking if baseContext is equal to this, we rely on the type checks. If we reach a point where context is neither an Activity nor a ContextWrapper, we can directly return null.

Simplified Return Logic:
After exiting the loop, a final check determines if the last context is an Activity, simplifying the return statement.