Fragments and Activities leaks with fragmentScope and activityScope extensions

[kdk96]

Describe the bug
There are fragments and activities leaks in the library, cause original instances will be retained as _source variable inside scope, which will be retained inside ScopeHandlerViewModel

LeakCanary report below:

References underlined with "~~~" are likely causes.
Learn more at https://squ.re/leaks.

51348 bytes retained by leaking objects
Signature: 7d4dbd1635a1ddbc84ef328cb276f6d1a0c9769b
┬───
│ GC Root: Local variable in native code
│
├─ android.os.HandlerThread instance
│    Leaking: NO (PathClassLoader↓ is not leaking)
│    Thread name: 'LeakCanary-Heap-Dump'
│    ↓ HandlerThread.contextClassLoader
├─ dalvik.system.PathClassLoader instance
│    Leaking: NO (GlobalContext↓ is not leaking and A ClassLoader is never leaking)
│    ↓ PathClassLoader.runtimeInternalObjects
├─ java.lang.Object[] array
│    Leaking: NO (GlobalContext↓ is not leaking)
│    ↓ Object[].[949]
├─ org.koin.core.context.GlobalContext class
│    Leaking: NO (a class is never leaking)
│    ↓ static GlobalContext._koin
│                           ~~~~~
├─ org.koin.core.Koin instance
│    Leaking: UNKNOWN
│    Retaining 2151 bytes in 78 objects
│    ↓ Koin.scopeRegistry
│           ~~~~~~~~~~~~~
├─ org.koin.core.registry.ScopeRegistry instance
│    Leaking: UNKNOWN
│    Retaining 1341 bytes in 47 objects
│    ↓ ScopeRegistry._scopes
│                    ~~~~~~~
├─ java.util.HashMap instance
│    Leaking: UNKNOWN
│    Retaining 225 bytes in 6 objects
│    ↓ HashMap.table
│              ~~~~~
├─ java.util.HashMap$Node[] array
│    Leaking: UNKNOWN
│    Retaining 173 bytes in 4 objects
│    ↓ HashMap$Node[].[0]
│                     ~~~
├─ java.util.HashMap$Node instance
│    Leaking: UNKNOWN
│    Retaining 85 bytes in 2 objects
│    ↓ HashMap$Node.value
│                   ~~~~~
├─ org.koin.core.scope.Scope instance
│    Leaking: UNKNOWN
│    Retaining 51822 bytes in 847 objects
│    ↓ Scope._source
│            ~~~~~~~
╰→ com.example.ui.AFlowFragment instance
​     Leaking: YES (ObjectWatcher was watching this because com.example.ui.AFlowFragment received
​     Fragment#onDestroy() callback and Fragment#mFragmentManager is null)
​     Retaining 51348 bytes in 830 objects
​     key = 1694cf9c-a177-4656-a465-1822ff48cbb2
​     watchDurationMillis = 199459
​     retainedDurationMillis = 194458
====================================
0 LIBRARY LEAKS

Koin project used and used version:
koin-androidx-ext version 2.2.0

[arnaudgiuliani]

Good catch 👍

[arnaudgiuliani]

Fixed in 2.2.1