Use collection hids for collection inputs in dataset names

[bernt-matthias]

For input of dataset collections to data_collection inputs or data inputs with multiple="true" the dataset name (on_string) lists the HIDs of the datasets in the input collections. This makes it more difficult than necessary to understand the history. It would be better to list the input collections.

This PR does 2 things:

• When the user inputs collections the dataset name refers to the input collections
• Since collection is such a long word the dataset name would be quite long (in particular for 2 or more collection inputs). Hence I changed the on_string from "data 1, data 2, and data 3" to "dataset 1, 2, and 3" and analogous for collections.

Discussion:

• Instead of dataset we could stick with data
• Instead of collection we could use list .. to me it seems that the terms are used interchangeably .. ultimately we should decide for one
• If one wants to be really fancy one could also distinguish pair / list (in the future)?

TODO:

• follow up on doc: add a little warning for <param ... multiple="true"> planemo#930

Fixes #7467

Before (using the identifier_multiple test tool for multiple data input):

Screencast.from.02.12.2024.13.22.58.webm

After:

Screencast.from.02.12.2024.13.14.30.webm

How to test the changes?

(Select all options that apply)

• I've included appropriate automated tests.
• This is a refactoring of components with existing test coverage.
• Instructions for manual testing are as follows:
  1. [add testing steps and prerequisites here if you didn't write automated tests covering all your changes]

License

• I agree to license these and all my past contributions to the core galaxy codebase under the MIT license.