chore(ci): resolve Hugo 0.161+ Node sandbox permission errors for CSS build

[dishaprakash]

Fixes the CSS compilation failures caused by the strict Node.js permission sandbox introduced in Hugo 0.161.0.

Changes:

• Allow necessary child processes
• Added .browserslistrc and browserslist-stats.json to the .hugo directory. This short-circuits the tool's aggressive directory traversal, preventing ERR_ACCESS_DENIED crashes without needing to allow global read permissions

This change has been confirmed by running the commands on CLI

[gemini-code-assist]

Code Review

This pull request updates the Hugo configuration for Cloudflare, including transitioning languageCode to locale, updating Node security permissions to allow specific child processes, and renaming languageName to label. It also adds browserslist configuration files. Feedback was provided to ensure formatting consistency by adding a space before an assignment operator.

[gemini-code-assist]

For consistency with the rest of the configuration file, please add a space before the assignment operator.

Suggested change

	label ="English"
	label = "English"