Fix TypeError in test_vmr_conversion_different_gases loop iteration

[Copilot]

• Add FMI Silam air quality ingest script
• Add wildfire smoke ingest for IS4FIRES v2.0
• Add VMR to concentration conversion utilities
• Add comprehensive tests for AQI calculation
• Fix test_vmr_conversion_different_gases TypeError
• Refactor loop to use .values() since name is unused

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[cloneofghosts]

@copilot While that fix works - name isn't being used anywhere in the loop so am wondering if it's fine as-is or should be changed?

[Copilot]

@copilot While that fix works - name isn't being used anywhere in the loop so am wondering if it's fine as-is or should be changed?

Changed to use gases.values() instead in commit 3916323. Since the gas name isn't used in the loop, iterating over just the values is cleaner and more Pythonic.