Validation of C7 diagram fails with `Error: showLintError is not a registered action`

Describe the issue

So I build the camunda-modeler-custom-linter-rules plugin project template (without any changes!) and added it to my modeler. I get the following error when clicking on the error in the Linter Tab in a C7 diagram:

showLintError is not a registered action
    at Ba (webpack://camunda-modeler-client/node_modules/diagram-js/lib/features/editor-actions/EditorActions.js:259:9)
    at error (webpack://camunda-modeler-client/node_modules/diagram-js/lib/features/editor-actions/EditorActions.js:169:10)
    at trigger (webpack://camunda-modeler-client/src/app/tabs/bpmn/BpmnEditor.js:723:40)
    at triggerAction (webpack://camunda-modeler-client/src/app/tabs/MultiSheetTab.js:269:18)
    at triggerAction (webpack://camunda-modeler-client/src/app/tabs/EditorTab.js:36:33)
    at triggerAction (webpack://camunda-modeler-client/src/app/App.js:1831:15)
    at file:///MY_DISK/camunda-modeler-win/resources/app.asar/public/bundle.js:2:2883152
    at file:///MY_DISK/camunda-modeler-win/resources/app.asar/public/72.js:1:3411
    at file:///MY_DISK/camunda-modeler-win/resources/app.asar/public/490.js:1:8466
    at apply (webpack://camunda-modeler-client/node_modules/react-dom/cjs/react-dom.production.min.js:14:427) [ error ]
This error may be the result of a plug-in compatibility issue. [ info ]
[Disable plug-ins (restarts the app)](https://github.com/camunda/camunda-modeler-custom-linter-rules-plugin/issues/new#) [ info ]

Steps to reproduce

Expected Behavior

Linting works in C7 diagrams, too.

Environment

Camunda Modeler 5.5.1 / also nightly. C7 diagram modeling.

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Linked to SUPPORT-15343

[strangelookingnerd]

Update: It works for Camunda 8, not Camunda 7…

Same error with the nightly for me:

showLintError is not a registered action
    at us (webpack://camunda-modeler-client/node_modules/bpmn-js/node_modules/diagram-js/lib/features/editor-actions/EditorActions.js:259:9)
    at error (webpack://camunda-modeler-client/node_modules/bpmn-js/node_modules/diagram-js/lib/features/editor-actions/EditorActions.js:169:10)
    at trigger (webpack://camunda-modeler-client/src/app/tabs/bpmn/BpmnEditor.js:723:40)
    at triggerAction (webpack://camunda-modeler-client/src/app/tabs/MultiSheetTab.js:269:18)
    at triggerAction (webpack://camunda-modeler-client/src/app/tabs/EditorTab.js:36:33)
    at triggerAction (webpack://camunda-modeler-client/src/app/App.js:1831:15)
    at file:///MY_DISK/camunda-modeler/resources/app.asar/public/bundle.js:2:2641508
    at file:///MY_DISK/camunda-modeler/resources/app.asar/public/72.js:1:3411
    at file:///MY_DISK/camunda-modeler/resources/app.asar/public/900.js:1:9351
    at apply (webpack://camunda-modeler-client/node_modules/react-dom/cjs/react-dom.production.min.js:14:427) [ error ]
This error may be the result of a plug-in compatibility issue. [ info ]

[nikku]

Thanks for taking your time to report all these glitches.