unit tests updated

[markdevocht]

Re-enable Android Robolectric unit tests disabled since New Architecture migration

When RNN migrated to React Native's New Architecture (Fabric), 27 Android unit test classes were disabled with @Ignore because ReactView now loads native libraries (rninstance via SoLoader) during construction — which fails under Robolectric since there's no real Android runtime.

The fix introduces two Robolectric shadow classes to intercept the native initialization chain without modifying any production code:

• ShadowSoLoader — stubs SoLoader.loadLibrary calls as no-ops, preventing native .so loading attempts.
• ShadowReactView — shadows ReactView's constructor to invoke FrameLayout's constructor directly, bypassing ReactHost.createSurface() and the entire native rendering pipeline. Also shadows lifecycle methods (onAttachedToWindow, start, destroy) to prevent NPEs from the missing reactSurface.

Supporting changes:

• TestApplication.reactHost returns a Mockito mock instead of calling getDefaultReactHost(), which would trigger native initialization.
• SimpleViewController.SimpleView extends FrameLayout directly instead of ReactView, implementing ReactComponent interface explicitly.
• Fixed a MockedStatic double-close bug in BaseTest.beforeEach.

Result: All 687 unit tests now pass (2 pre-existing method-level @Ignores remain).