release: v7.0.4

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Note

Medium Risk
Mostly a release/config PR, but it removes the entire mobile/fastlane deployment setup and tweaks transaction certificate parsing; the latter could affect transaction history/UI rendering if unexpected null certificate data appears.

Overview
Bumps the mobile app version to 7.0.4 across app.json, package.json, and lockfiles.

Removes the mobile/fastlane directory (env files, Fastfile, Ruby deps, match/config docs), effectively dropping fastlane-based iOS/Android publish automation from the repo.

Hardens transaction handling against malformed data by filtering out null entries in WalletTransaction.certificates during storage parsing and in multiple transaction formatting/type/display paths, preventing downstream logic from processing missing certificates.

^{Written by Cursor Bugbot for commit 9a20cd7. This will update automatically on new commits. Configure here.}

[stackchain]

@rahulnr7 this is a known bug with some tickets, I've published preview for testing, if it solves the users' issue please coordinate to merge prod.