Copyright string is included in copied version information

[per1234]

Describe the bug

When you copy the version information from the "About" dialog, the useless copyright notice is copied along with the useful version information.

🐛 The version information is very useful when writing bug reports, but I find it tedious to have to remove the copyright text every time.

To Reproduce

1. Select Help > About Arduino IDE from the Arduino IDE menus.
2. Click the Copy button.
3. Paste the copied content somewhere.

🐛 You will see the copyright notice at the end of the text:

Version: 2.0.0-rc1-snapshot.f0d9894
Date: 2021-11-30T16:25:41.414Z
CLI Version: 0.20.1 [abb21449]

Copyright © 2021 Arduino SA

Expected behavior

The copied content should only contain the useful information:

Version: 2.0.0-rc1-snapshot.f0d9894
Date: 2021-11-30T16:25:41.414Z
CLI Version: 0.20.1 [abb21449]

Desktop

• OS: Windows 10
• Version: 2.0.0-rc1-snapshot.f0d9894
  Date: 2021-11-30T16:25:41.414Z
  CLI Version: 0.20.1 [abb21449]

Additional context

This was previously reported at arduino/arduino-pro-ide#423 and fixed in 1c03d12 but there has been a regression since.

[Michael2MacDonald]

In addition, the text in the "About" dialog is not selectable, forcing the user to manually type it out or copy the entire block of information even if they want only one of the entries, don't want to copy the labels, or want to copy each entry one at a time.

If there is a very easy way of allowing the user to copy just the version or date information without copying the CLI version, for example, then that would be a small improvement to usability.

But I think this is such a little detail. It is not worth the effort of the Arduino team if, for example, the entire dialog needs to be remade because the current method of creating the dialog does not allow making text selectable.