self-contained build contains unused modules

Expected Behavior

One reason why UI5 modules can be included in the self-contained bundle - even when not explicitly used within the project - is that these modules might be required as dependencies within the ui5 framework itself.

However generally, it is not expected that ui5 classes are part of the self-contained bundle when they are not required anywhere in the project.

Current Behavior

The self-contained bundle contains lots of classes / ui5 controls, even though they aren't included anywhere in the project.
For instance in case of the ui5-sample-app:

• sap/m/Dialog.js
• sap/m/Select.js
• sap/m/Table.js

Steps to Reproduce the Issue

1. git clone https://github.com/SAP/openui5-sample-app.git
2. cd openui5-sample-app && npm run build-self-contained
3. Analyze dist/resources/sap-ui-custom.js

Context

• UI5 Module Version (output of ui5 --version when using the CLI): 2.11.2

Reproduce the issue with openui5-sample-app using npm run build-self-contained, then inspect dist/resources/sap-ui-custom.js and the self-contained bundling entry points. Determine why sap/m/Dialog.js, sap/m/Select.js, and sap/m/Table.js are included; done means unused UI5 classes are excluded while required framework dependencies remain.