Make graphiql log more in verbose mode

[dmerand]

WHY are these changes introduced?

To improve debugging capabilities for GraphiQL server operations in the CLI, making it easier to diagnose issues with token refresh and GraphQL requests.

WHAT is this pull request doing?

Adds detailed debug logging throughout the GraphiQL server implementation:

• Logs token refresh URL, request body (with redacted secrets), and response status
• Logs GraphQL endpoint information and request details
• Adds request timing measurements to track performance
• Captures and logs error details for failed requests
• Logs response bodies to help with troubleshooting

These logs are sent to the debug output stream, making them available when running with debug mode enabled.

How to test your changes?

1. Run the CLI with debug mode enabled: DEBUG=* shopify dev
2. Open the GraphiQL interface and execute some queries
3. Check the debug output for the new detailed logs about token refresh and GraphQL requests
4. Intentionally cause an error (e.g., by using an invalid token) to verify error logging

Measuring impact

How do we know this change was effective? Please choose one:

• n/a - this doesn't need measurement, e.g. a linting rule or a bug-fix

Checklist

• I've considered possible cross-platform impacts (Mac, Linux, Windows)
• I've considered possible documentation changes

[dmerand]

• Make graphiql log more in verbose mode #5991 👈 (View in Graphite)
• main

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[github-actions]

Coverage report

St.❔	Category	Percentage	Covered / Total
🟡	Statements	78.08% (-0.09% 🔻)	12494/16002
🟡	Branches	72.31% (+0% 🔼)	6076/8403
🟡	Functions	78.32% (-0.06% 🔻)	3265/4169
🟡	Lines	78.51% (-0.09% 🔻)	11823/15059

Show files with reduced coverage 🔻

St.❔	File	Statements	Branches	Functions	Lines
🔴	... / server.ts	1.02% (-0.23% 🔻)	0%	0%	1.06% (-0.25% 🔻)
🟢	... / Dev.tsx	90.59% (-2.35% 🔻)	75% (-1.79% 🔻)	86.36% (-4.55% 🔻)	92.5% (-1.25% 🔻)

Test suite run success

2884 tests passing in 1254 suites.

Report generated by 🧪jest coverage report action from 7b6c644