Enable build scans for all jobs on CI and nightly flows (#7778)

Task/Issue URL:
https://app.asana.com/1/137249556945/project/488551667048375/task/1213360779751566?focus=true

### Description
Adds Develocity build scan support to the CI jobs that we missed
originally.

### Steps to test this PR
No QA needed

### UI changes
No UI changes

<!-- CURSOR_SUMMARY -->
---

> [!NOTE]
> **Low Risk**
> Workflow-only change that adds an env var from secrets; risk is
limited to CI behavior and secret availability/misconfiguration.
> 
> **Overview**
> Enables Develocity build scan support across CI and nightly GitHub
Actions by exporting `DEVELOCITY_ACCESS_KEY` from secrets into the
`code_formatting`, `unit_tests`, and `lint` jobs.
> 
> This makes those Gradle tasks run with the same build-scan credentials
as the other workflows/jobs, without changing any build logic or tasks
executed.
> 
> <sup>Written by [Cursor
Bugbot](https://cursor.com/dashboard?tab=bugbot) for commit
9068256. This will update automatically
on new commits. Configure
[here](https://cursor.com/dashboard?tab=bugbot).</sup>
<!-- /CURSOR_SUMMARY -->

Author: landomen

.github/workflows/ci.yml

@@ -22,6 +22,8 @@ jobs:
   code_formatting:
     name: Code Formatting
     runs-on: ubuntu-24.04
+    env:
+      DEVELOCITY_ACCESS_KEY: ${{ secrets.DEVELOCITY_ACCESS_KEY }}
 
     steps:
       - name: Checkout repository
@@ -47,6 +49,8 @@ jobs:
   unit_tests:
     name: Unit tests
     runs-on: android-large-runner
+    env:
+      DEVELOCITY_ACCESS_KEY: ${{ secrets.DEVELOCITY_ACCESS_KEY }}
 
     steps:
       - name: Checkout repository
@@ -82,6 +86,8 @@ jobs:
   lint:
     name: Lint
     runs-on: android-large-runner
+    env:
+      DEVELOCITY_ACCESS_KEY: ${{ secrets.DEVELOCITY_ACCESS_KEY }}
 
     steps:
       - name: Checkout repository

.github/workflows/nightly.yml

@@ -22,6 +22,8 @@ jobs:
   code_formatting:
     name: Code Formatting
     runs-on: android-large-runner
+    env:
+      DEVELOCITY_ACCESS_KEY: ${{ secrets.DEVELOCITY_ACCESS_KEY }}
 
     steps:
       - name: Checkout repository
@@ -48,6 +50,8 @@ jobs:
   unit_tests:
     name: Unit tests
     runs-on: android-large-runner
+    env:
+      DEVELOCITY_ACCESS_KEY: ${{ secrets.DEVELOCITY_ACCESS_KEY }}
 
     steps:
       - name: Checkout repository
@@ -84,6 +88,8 @@ jobs:
   lint:
     name: Lint
     runs-on: android-large-runner
+    env:
+      DEVELOCITY_ACCESS_KEY: ${{ secrets.DEVELOCITY_ACCESS_KEY }}
 
     steps:
       - name: Checkout repository