rocksdb compilation error fix (#7408)

## Description

Attempts to fix error in CI:
https://github.com/FuelLabs/sway/actions/runs/17945577761/job/51050235186

Build environment setup for RocksDB:

* Added a step to install required system packages (`build-essential`,
`clang`, `llvm-dev`, `libclang-dev`, `pkg-config`) on Linux runners to
support building RocksDB and running `bindgen`.
* Configured `LIBCLANG_PATH` and `BINDGEN_EXTRA_CLANG_ARGS` environment
variables to ensure `bindgen` can locate the correct Clang libraries and
system headers.

## Checklist

- [ ] I have linked to any relevant issues.
- [ ] I have commented my code, particularly in hard-to-understand
areas.
- [ ] I have updated the documentation where relevant (API docs, the
reference, and the Sway book).
- [ ] If my change requires substantial documentation changes, I have
[requested support from the DevRel
team](https://github.com/FuelLabs/devrel-requests/issues/new/choose)
- [ ] I have added tests that prove my fix is effective or that my
feature works.
- [ ] I have added (or requested a maintainer to add) the necessary
`Breaking*` or `New Feature` labels where relevant.
- [ ] I have done my best to ensure that my PR adheres to [the Fuel Labs
Code Review
Standards](https://github.com/FuelLabs/rfcs/blob/master/text/code-standards/external-contributors.md).
- [ ] I have requested a review from the relevant team or maintainers.

Co-authored-by: z <[email protected]>
Co-authored-by: Joshua Batty <[email protected]>

Author: zees-dev

.github/workflows/ci.yml

@@ -952,6 +952,20 @@ jobs:
           cache-on-failure: true
           key: "${{ matrix.job.target }}"
 
+      - name: Prepare RocksDB build env
+        if: runner.os == 'Linux'
+        env:
+          DEBIAN_FRONTEND: noninteractive
+        run: |
+          sudo apt-get update
+          sudo apt-get install -y build-essential clang llvm-dev libclang-dev pkg-config
+
+          # ensure bindgen loads the freshly installed libclang runtime
+          echo "LIBCLANG_PATH=$(llvm-config --libdir)" >> "$GITHUB_ENV"
+
+          # ensure bindgen resolves standard headers on the runner
+          echo "BINDGEN_EXTRA_CLANG_ARGS=--sysroot=/usr" >> "$GITHUB_ENV"
+
       - name: Use Cross
         uses: baptiste0928/cargo-install@v1
         with: