fix: Ensure the test spinner stops

[ofekatr]

• Follows CONTRIBUTING rules

What does this PR do?

• Ensures the spinner for the experimental test flow stops, no matter if the flow fails or ends successfully.

Where should the reviewer start?

src/cli/commands/test/iac/v2/index.ts

How should this be manually tested?

• Run the experimental test flow in a way that should make it fail, e.g., provide a custom ruleset bundle path to a non-existing ruleset.
• Ensure the spinner disappears as expected.

Screenshots

• Before:
  
• After:
  

[github-actions]

	Warnings
⚠️	You've modified files in src/ directory, but haven't updated anything in test folder. Is there something that could be tested?

Generated by 🚫 dangerJS against 5d9d15f

[Jimimaku]

• Follows CONTRIBUTING rules

What does this PR do?

• Ensures the spinner for the experimental test flow stops, no matter if the flow fails or ends successfully.

Where should the reviewer start?

src/cli/commands/test/iac/v2/index.ts

How should this be manually tested?

• Run the experimental test flow in a way that should make it fail, e.g., provide a custom ruleset bundle path to a non-existing ruleset.
• Ensure the spinner disappears as expected.

Screenshots

• Before:
  
• After:
  

[ofekatr]

@Jimimaku Your comment above only copied the content of the PR's description. Did you mean to quote something and comment on it?