Fix missing cache dir crashing cleanup

The cache created by uv is never written to for rust-only workflows, which was leading to a crash when the cleanup step tried removing a non-existent directory.

Author: AndrewADev

.github/actions/setup-test-environment/action.yml

@@ -6,6 +6,10 @@ inputs:
     description: "Python version to install"
     required: false
     default: "3.10"
+  enable-uv-cache:
+    description: "Whether to enable uv caching (disable for jobs that install no Python packages)"
+    required: false
+    default: "true"
 
 runs:
   using: "composite"
@@ -28,3 +32,4 @@ runs:
       uses: astral-sh/setup-uv@v7
       with:
         python-version: ${{ inputs.python-version }}
+        enable-cache: ${{ inputs.enable-uv-cache }}

.github/workflows/rust.yml

@@ -15,6 +15,8 @@ jobs:
         uses: actions/checkout@v6
       - name: Setup Environment
         uses: ./.github/actions/setup-test-environment
+        with:
+          enable-uv-cache: false
       - name: Check warnings in documents
         uses: actions-rs/cargo@v1
         with:
@@ -30,6 +32,8 @@ jobs:
         uses: actions/checkout@v6
       - name: Setup Environment
         uses: ./.github/actions/setup-test-environment
+        with:
+          enable-uv-cache: false
       - name: Run cargo fmt
         uses: actions-rs/cargo@v1
         with:
@@ -43,6 +47,8 @@ jobs:
         uses: actions/checkout@v6
       - name: Setup Environment
         uses: ./.github/actions/setup-test-environment
+        with:
+          enable-uv-cache: false
       - name: Check with clippy
         uses: actions-rs/clippy-check@v1
         with:
@@ -56,6 +62,8 @@ jobs:
         uses: actions/checkout@v6
       - name: Setup Environment
         uses: ./.github/actions/setup-test-environment
+        with:
+          enable-uv-cache: false
       - name: Run tests
         uses: actions-rs/cargo@v1
         with: