`ALooper_pollAll` is marked deprecated by Android NDK

[wuwbobo2021]

I have found this discussion occasionally: android/ndk#2020.

Check https://developer.android.com/ndk/reference/group/looper#alooper_pollall:

[Deprecated. ] Calls to ALooper_pollAll should be replaced with ALooper_pollOnce. If you call ALooper_pollOnce in a loop, you must treat all return values as if they also indicate ALOOPER_POLL_WAKE.

[MarijnS95]

On the NDK side this is handled in rust-mobile/ndk#491. If we didn't replace it in android-activity yet, a crate upgrade will cause a deprecation warning.

[MarijnS95]

@wuwbobo2021 I've restored the original title and hid your new off-topic issue. Please refrain from using one issue to track multiple disjoint user requests, and instead open a new issue for anything that's unrelated.