[GREENFOOT-436] Parameter prompts do not always work

The parameter field prompt texts in the Stride editor do not always work.

E.g.

\- turn (created with code completion) \- works \- turn (w/o c/c) \- works \- setLocation (w c/c) \- works \- setLocation (w/o c/c) \- DOES NOT WORK \- getWorld().addObject \- again, works w/ c/c but not without

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Issue metadata

• Issue type: Bug
• Priority: Low
• Fix versions: 3.0.1