use standard .cache for build disk cache

[subtleGradient]

PROBLEM:
the default options totally disable the disk cache
under some circumstances. e.g. when using flake.nix instead of homebrew

ALTERNATIVE:
instead of the standard node_modules/.cache, maybe ~/.cache
to allow sharing the build cache across many git worktrees

[Copilot]

Pull Request Overview

This PR adds explicit configuration options for the Expo build disk cache to ensure it remains enabled in all environments, particularly when using alternative package managers like flake.nix instead of homebrew.

• Adds explicit cache directory configuration pointing to node_modules/.cache/expo-build-disk-cache
• Configures cache garbage collection to run every 7 days
• Explicitly enables the cache and sets debug mode to false

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[cpojer]

These three options are the default values, why did you add them here?

[cpojer]

Why is /tmp/ not good enough as a default?

cc @WookieFPV

[WookieFPV]

The default cache directory is a os specific temp directory (/tmp/).
The default options should be fine for most projects.

I am not sure how and why flake.nix breaks caching.
If you only get cache misses there is usually some files that change all the time and you have to use a custom expo fingerprint config.

@subtleGradient could you provide more info/repro?