Streamline helper logic and config cloning

[Copilot]

Cleanup focused on removing unused helpers and reducing redundant logic paths while preserving behavior.

• ADB utilities
  • Drop unused overloads and centralize device ID validation in AdbUtil.
• Session config cloning
  • Introduce FridaSessionConfig.copy() and remove dialog-local cloning logic.
• Script generation
  • Remove redundant return-type branch and keep null-safe patch field serialization.

FridaSessionConfig cfg = (fixedSessionConfig != null ? fixedSessionConfig : baseSessionConfig).copy();
if (cfg.getDeviceMode() == DeviceMode.USB && !AdbUtil.isValidDeviceId(cfg.getDeviceId())) {
    // handle invalid device selection
}

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