Fix j-test-id of report editor's buttons

[owlet1997]

Environment:
Jmix version: 1.0.0-SNAPSHOT
Jmix Studio plugin version: 1.1.SNAPSHOT3273-211
IntelliJ version: IntelliJ IDEA 2021.1.3 (Community Edition)

TC:

1. Create new project -> Add reports add-on
2. Set in application.properties:
   jmix.ui.testMode = true
3. Run app -> Open reports browser
4. Create -> New
5. Switch to Parameters and formats tab
6. Open Dev tools -> Look at j-test-id of Create, Edit and Remove buttons in Parameters and Value formats blocks

AR:
buttons have the same id:

ER:
buttons should have different j-test-id like 'createParam', 'editParam', 'removeParam' and 'createValue', 'editValue', 'removeValue'