…d iOS build number (#28375)

<!--
Please submit this PR as a draft initially.
Do not mark it as "Ready for review" until the template has been
completely filled out, and PR status checks have passed at least once.
-->

## **Description**

<!--
Write a short description of the changes included in this pull request,
also include relevant motivation and context. Have in mind the following
questions:
1. What is the reason for the change?
2. What is the improvement/solution?
-->

The `upload-to-testflight.yml` workflow had opaque `summary_*` prefixed
inputs that made it hard to understand what each value represented. The
`build.yml` workflow also lacked an iOS build number output, forcing
callers to use the Android version code as a proxy.

This PR:
- Renames `summary_*` inputs in `upload-to-testflight.yml` to clearer
names (`build_version`, `build_number`, `build_commit_sha`,
`source_branch`, `build_branch`)
- Adds `ios_version_code` as a new output from `build.yml`, extracted
from the Xcode project's `CURRENT_PROJECT_VERSION`
- Updates all callers (`build-and-upload-to-testflight.yml`,
`runway-ota-build-core.yml`) to use the renamed inputs
- Removes a leftover debug step from `runway-ota-build-core.yml`
- Removes redundant fallback defaults in the upload script call (callers
already provide defaults)

## **Changelog**

<!--
If this PR is not End-User-Facing and should not show up in the
CHANGELOG, you can choose to either:
1. Write `CHANGELOG entry: null`
2. Label with `no-changelog`

If this PR is End-User-Facing, please write a short User-Facing
description in the past tense like:
`CHANGELOG entry: Added a new tab for users to see their NFTs`
`CHANGELOG entry: Fixed a bug that was causing some NFTs to flicker`

(This helps the Release Engineer do their job more quickly and
accurately)
-->

CHANGELOG entry: null

## **Related issues**

Fixes:

## **Manual testing steps**

N/A — CI workflow changes only. Verify by triggering the
`build-and-upload-to-testflight` or `runway-ota-build-core` workflows
and checking that the step summary displays the correct build metadata
fields.

## **Screenshots/Recordings**

<!-- If applicable, add screenshots and/or recordings to visualize the
before and after of your change. -->

### **Before**

N/A

### **After**

N/A

## **Pre-merge author checklist**

- [x] I've followed [MetaMask Contributor
Docs](https://github.com/MetaMask/contributor-docs) and [MetaMask Mobile
Coding
Standards](https://github.com/MetaMask/metamask-mobile/blob/main/.github/guidelines/CODING_GUIDELINES.md).
- [x] I've completed the PR template to the best of my ability
- [x] I've included tests if applicable
- [x] I've documented my code using [JSDoc](https://jsdoc.app/) format
if applicable
- [x] I've applied the right labels on the PR (see [labeling
guidelines](https://github.com/MetaMask/metamask-mobile/blob/main/.github/guidelines/LABELING_GUIDELINES.md)).
Not required for external contributors.

## **Pre-merge reviewer checklist**

- [ ] I've manually tested the PR (e.g. pull and build branch, run the
app, test code being changed).
- [ ] I confirm that this PR addresses all acceptance criteria described
in the ticket it closes and includes the necessary testing evidence such
as recordings and or screenshots.

<!-- Generated with the help of the pr-description AI skill -->

Made with [Cursor](https://cursor.com)

<!-- CURSOR_SUMMARY -->
---

> [!NOTE]
> **Medium Risk**
> CI/release workflow wiring changed for TestFlight uploads and build
metadata; mis-mapped inputs or parsing failures could break release
automation even though no app runtime code is touched.
> 
> **Overview**
> Simplifies the reusable `upload-to-testflight.yml` interface by
replacing opaque `summary_*` inputs with explicit `source_branch`,
`build_branch`, `build_commit_sha`, `build_version`, and `build_number`,
and updates the step summary to match.
> 
> Extends `build.yml` to emit an `ios_version_code` output by parsing
Xcode’s `CURRENT_PROJECT_VERSION`, and updates TestFlight callers
(`build-and-upload-to-testflight.yml`, `runway-ota-build-core.yml`) to
pass the new fields and use the iOS build number instead of Android’s.
> 
> Removes a debug step from `runway-ota-build-core.yml` and drops
redundant default fallbacks when invoking
`scripts/upload-to-testflight.sh` (workflow inputs already provide
defaults).
> 
> <sup>Written by [Cursor
Bugbot](https://cursor.com/dashboard?tab=bugbot) for commit
08245a8. This will update automatically
on new commits. Configure
[here](https://cursor.com/dashboard?tab=bugbot).</sup>
<!-- /CURSOR_SUMMARY -->

---------

Co-authored-by: Cal-L <cal.leung@consensys.net>