DYN-4361: Enabling Ctrl+C for node previews within Dynamo

[EdwardChaplinArchilizer]

Purpose

Draft PR.

This PR is intended to add the ability to CTRL+C selected text within node preview dropdowns and watch nodes. As detailed here: https://jira.autodesk.com/browse/DYN-4361

Achieved by replacing the TextBlock with a TextBox and turning off the TextBox background/border whilst making it ReadOnly so that it resembles a TextBlock and enables CTRL+C.

Declarations

Check these if you believe they are true

• The codebase is in a better state after this PR
• Is documented according to the standards
• The level of testing this PR includes is appropriate
• User facing strings, if any, are extracted into *.resx files
• All tests pass using the self-service CI.
• Snapshot of UI changes, if any.
• Changes to the API follow Semantic Versioning and are documented in the API Changes document.
• This PR modifies some build requirements and the readme is updated
• This PR contains no files larger than 50 MB

Release Notes

Draft PR.

Making Ctrl + C work to copy selected data out of preview bubbles/watch nodes

Reviewers

@dnenov
@achintyabhat
@QilongTang

FYIs

@Amoursol

[github-actions]

See the ticket for this pull request: https://jira.autodesk.com/browse/DYN-4361

[reddyashish]

I think making it a TextBox will affect the up/down arrow navigation of the results in the preview bubble. That is the reason we did not make this change. Can you verify that?

[johnpierson]

This will affect that unless some additional handlers are added. https://jira.autodesk.com/browse/DYN-7978