fix: cursor and newline missing when running without --watch

[bartekpacia]

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Fixes #46

Changes proposed

Apparently the finally block containing VT100.showCursor and VT100.newline was not executed because the function was being returned from within the try block.

Now it's fixed. I didn't write tests for it because I'm not familiar with this project's codebase at all.

Check List (Check all the applicable boxes)

• [x] My code follows the code style of this project.
• [x] This PR does not contain plagiarized content.
• [x] The title and description of the PR is clear and explains the approach.

[rrousselGit]

Thanks!

[rrousselGit]

Do you mind writing a test for this?

As an example, you can look at summary contains list of all errors independently from suites/groups within spec_cli_test.dart. This should give you enough clues for what to do.

You might have to change TestRenderer (cf the testRenderer variable`) to optionally disable the ANSI removal from the output (line 88 in test/utils.dart)