…plate-and-add-labels` workflows to use OIDC token exchange cp-7.80.0 (#30840)

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## **Description**

This updates the `add-team-label` and `check-template-and-add-labels`
workflows to use OIDC token exchange.

## **Changelog**

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CHANGELOG entry:

## **Related issues**

Fixes:

## **Manual testing steps**

```gherkin
Feature: my feature name

  Scenario: user [verb for user action]
    Given [describe expected initial app state]

    When user [verb for user action]
    Then [describe expected outcome]
```

## **Screenshots/Recordings**

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before and after of your change. -->

### **Before**

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### **After**

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## **Pre-merge author checklist**

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- [ ] 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).
- [ ] I've completed the PR template to the best of my ability
- [ ] I've included tests if applicable
- [ ] I've documented my code using [JSDoc](https://jsdoc.app/) format
if applicable
- [ ] 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.

#### Performance checks (if applicable)

- [ ] I've tested on Android
  - Ideally on a mid-range device; emulator is acceptable
- [ ] I've tested with a power user scenario
- Use these [power-user
SRPs](https://consensyssoftware.atlassian.net/wiki/spaces/TL1/pages/edit-v2/401401446401?draftShareId=9d77e1e1-4bdc-4be1-9ebb-ccd916988d93)
to import wallets with many accounts and tokens
- [ ] I've instrumented key operations with Sentry traces for production
performance metrics
- See [`trace()`](/app/util/trace.ts) for usage and
[`addToken`](/app/components/Views/AddAsset/components/AddCustomToken/AddCustomToken.tsx#L274)
for an example

For performance guidelines and tooling, see the [Performance
Guide](https://consensyssoftware.atlassian.net/wiki/spaces/TL1/pages/400085549067/Performance+Guide+for+Engineers).

## **Pre-merge reviewer checklist**

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unchecked box is ambiguous, a checked box means the reviewer consciously
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- [ ] I've manually tested the PR (e.g. pull and build branch, run the
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- [ ] 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.

<!-- CURSOR_SUMMARY -->
---

> [!NOTE]
> **Medium Risk**
> Changes how automation authenticates to GitHub (and planning);
misconfiguration could break PR/issue labeling until tokens and
permissions are correct.
> 
> **Overview**
> Two GitHub Actions workflows now obtain GitHub API tokens through
**OIDC token exchange** (`MetaMask/github-tools` `get-token@v1` and
`vars.TOKEN_EXCHANGE_URL`) instead of repository **secrets**
(`TEAM_LABEL_TOKEN`, `LABEL_TOKEN`).
> 
> **`add-team-label`** grants `id-token: write`, mints a read-only token
for `MetaMask/MetaMask-planning`, a separate token with `pull_requests:
write`, and passes both into `add-team-label@v1` as `planning-token` and
`team-label-token`.
> 
> **`check-template-and-add-labels`** adds `contents: read` and
`id-token: write`, fetches a scoped token (`issues: write`, `members:
read`, `pull_requests: write`), and wires `LABEL_TOKEN` to that output
for the existing script step.
> 
> <sup>Reviewed by [Cursor Bugbot](https://cursor.com/bugbot) for commit
b51e09a. Bugbot is set up for automated
code reviews on this repo. Configure
[here](https://www.cursor.com/dashboard/bugbot).</sup>
<!-- /CURSOR_SUMMARY -->