refactor: Remove white texts from IaC test output

[ofekatr]

• Follows CONTRIBUTING rules

What does this PR do?

• Changes white texts in the new IaC test output to be in the CLI's default text color.

Where should the reviewer start?

src/lib/formatters/iac-output/v2/utils.ts

How should this be manually tested?

• Ensure the test output hasn't changed apart from white texts being converted to texts in the default color.
• Using a terminal with a bright bg, ensure all texts are visible.
• Using a terminal with a dark bg, ensure all texts are visible.

Any background context you want to provide?

• At the moment, users with a light terminal background will not be able to see most of the headers in our output.

What are the relevant tickets?

• No tickets.

Screenshots

Before:

After:

Additional information

• Slack thread on #iac-config-team
• Slack thread on #ask-team-hammer

[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?

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