AndroidSignalOperation: Connect to QtcProcess::done() signal

Instead of connecting to finished() signal.
Get rid of some code repetition.

Change-Id: I50d2ba0e4607c853dbc9a0baae5b9ba2bdf41e2c
Reviewed-by: Alessandro Portale <alessandro.portale@qt.io>
Reviewed-by: <github-actions-qt-creator@cristianadam.eu>

src/plugins/android/androidsignaloperation.h

@@ -55,6 +55,7 @@ private:
 
     using FinishHandler = std::function<void()>;
 
+    bool handleCrashMessage();
     void adbFindRunAsFinished();
     void adbKillFinished();
     void handleTimeout();