Launcher fails to resize properly on version string change

**Initial state:**
have only stable versions installed (therefore having short version names, e.g. `2.4.0`)

**State change:**
update to snapshot version

**New state:**
selected version is now set to latest (very long version name, e.g. `2.5.0-SNAPSHOT.###.#########`)

**Problem:**
larger version string resizes / stretches some input fields, therefore moving the launch button (anchored on the right side) outside the view

**Workaround:**
resize the window manually

**Suggested fix:**
- auto resize the window
- truncate overflow of version string with ellipsis (only in field, not in dropdown)
- or check the used panels for their resizing strategy, anchoring them to the right (probably introduces scrollbars)

**Priority:**
not very high, but might confuse new users

Start by reproducing the issue in the launcher: switch from a stable version with a short name to a snapshot version with a long name and inspect the window layout and version field. Done means the launch button remains visible after the version changes and the long version is handled without requiring manual window resizing.

Written by the indexing model from the issue text.