NPE in SoftButtonReplaceOperation

[JulianKast]

Bug Report

Npe can occur under certain circumstances when changing layouts and updating soft buttons at the same time.

NPE occurs on line 54 of SoftButtonReplaceOperation, supportsSoftButtonImages() returns null in the test case outlined in this issue.

        if (!supportsSoftButtonImages()) {

Reproduction Steps

1. Set Template that does not support Softbuttons
2. In batch update change the layout to one that does support Softbuttons and add Softbuttons in the update

Expected Behavior

Soft buttons appear on screen, All taskMaster operations are functional

Observed Behavior

TaskMaster task stop working,

OS & Version Information

• Android Version: 11
• SDL Android Version: 5.3.0
• Testing Against: manticore

Test Case, Sample Code, and / or Example App

        TemplateConfiguration templateConfiguration = new TemplateConfiguration().setTemplate(PredefinedLayout.GRAPHIC_WITH_TEXTBUTTONS.toString());

SoftButtonState softButtonState = new SoftButtonState("State1", "Text1", null);

        SoftButtonObject softButtonObject = new SoftButtonObject("Button1", softButtonState, new SoftButtonObject.OnEventListener() {
            @Override
            public void onPress(SoftButtonObject softButtonObject, OnButtonPress onButtonPress) {

            }

            @Override
            public void onEvent(SoftButtonObject softButtonObject, OnButtonEvent onButtonEvent) {

            }
        });
List<SoftButtonObject> softButtonObjectList = Arrays.asList(softButtonObject);

        sdlManager.getScreenManager().beginTransaction();
        sdlManager.getScreenManager().setTextField1(textField1);
        sdlManager.getScreenManager().setTextField2(textField2);
        sdlManager.getScreenManager().setTextField2(textField3);
        sdlManager.getScreenManager().setTextField2(textField4);
        sdlManager.getScreenManager().setTitle(titleField);
        sdlManager.getScreenManager().setSoftButtonObjects(softButtonObjectList);
        sdlManager.getScreenManager().changeLayout(templateConfiguration, null);
        sdlManager.getScreenManager().commit(new CompletionListener() {
            @Override
            public void onComplete(boolean success) {
            }
        });

[RHenigan]

This issue was fixed and resolved in the 5.3.1 Hotfix release.
As part of PR #1773