humanizeKey glues acronyms to the next word in Vibenet fallback labels

[omerbek]

Summary

Vibenet uses humanizeKey to generate fallback labels for unknown contract keys. The current camelCase splitting only handles lowercase/digit to uppercase boundaries, so embedded acronyms stay attached to the following word.

Repro

Current behavior:

humanizeKey('myUSDCToken') // "My USDCToken"
humanizeKey('someAPIKey')  // "Some APIKey"

Expected labels are My USDC Token and Some API Key.

Expected behavior

The formatter should split acronym-to-word boundaries before applying the existing lowercase/digit-to-uppercase split, while preserving current output for normal camelCase keys such as usdvToken and l2OutputOracle.