Improve IDE settings prompt formatting and default to yes

[anton-107]

Summary

• Wrap the settings JSON preview in { } with proper indentation so it stands out visually
• Add blank lines around the settings block for padding
• Default the "Apply these settings?" prompt to yes ([Y/n]) — pressing Enter accepts
• Shorten inline comments (// Global setting instead of // Global setting that affects all remote ssh connections)

Stacked on #4701.

Test plan

• Existing vscode settings tests pass
• Manual test: verify the prompt renders with proper formatting and padding
• Manual test: pressing Enter without typing accepts the settings

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