Fix preview in nodes with workflows

Problem/Motivation

Previewing nodes is throwing errors. Other than previewing content no other issues are currently found. Creating, editing and viewing nodes work as expected.

Error message:

The website encountered an unexpected error. Please try again later.
Error: Call to a member function getEntity() on null in Drupal\node\ParamConverter\NodePreviewConverter->convert() (line 37 of core/modules/node/src/ParamConverter/NodePreviewConverter.php).

This is a new project and some differences I found was that I enabled <code>varbase_workflow

.

Proposed resolution

Add the 3264639-2.patch from #3264639: Can't preview a new node

Remaining tasks

• ✅ File an issue about this project
• ✅ Addition/Change/Update/Fix to this project
• ✅ Testing to ensure no regression
• ➖ Automated unit/functional testing coverage
• ➖ Developer Documentation support on feature change/addition
• ➖ User Guide Documentation support on feature change/addition
• ✅ Accessibility and Readability
• ✅ Code review from 1 Varbase core team member
• ✅ Full testing and approval
• ✅ Credit contributors
• ✅ Review with the product owner
• ✅ Update Release Notes and Update Helper on new feature change/addition
• ✅ Release varbase-9.0.7, varbase_workflow-2.0.7

Varbase update type

• ✅ No Update
• ➖ Optional Update
• ➖ Forced Update
• ➖ Forced Update if Unchanged

User interface changes

• N/A

API changes

• N/A

Data model changes

• N/A

Release notes snippet

• Issue #3223852 by jedgar1mx, yasmeensalah, Qusai Taha: Fixed preview in nodes with workflows