Fail darwin-framework-tool pairing commands once the SDK says it's fa…

…iled. (#20639)

That's what chip-tool does.  Without this, darwin-framework-tool ends
up sitting there until the (2-minute) command timeout.

Fixes #20589

examples/darwin-framework-tool/commands/pairing/PairingDelegateBridge.mm

@@ -33,6 +33,7 @@ - (void)onStatusUpdate:(MTRPairingStatus)status
         break;
     case MTRPairingStatusFailed:
         ChipLogError(chipTool, "Secure Pairing Failed");
+        _commandBridge->SetCommandExitStatus(CHIP_ERROR_INCORRECT_STATE);
         break;
     case MTRPairingStatusUnknown:
         ChipLogError(chipTool, "Uknown Pairing Status");