Remove C# analysis from CodeQL workflow and update repository languages (#32860)

Author: alexslavr

.github/copilot-instructions.md

@@ -7,7 +7,7 @@
 **Repository Stats:**
 - **Type:** Monorepo (pnpm workspaces + Nx)
 - **Size:** Large (1000+ files across multiple packages)
-- **Languages:** TypeScript, JavaScript, SCSS, C# (.NET for test runner)
+- **Languages:** TypeScript, JavaScript, SCSS
 - **Package Manager:** pnpm 9.15.4 (specified in package.json)
 - **Node Version:** 20.x (required by CI)
 - **Build System:** Gulp + Nx + custom build scripts + custom Nx executors (via `devextreme-nx-infra-plugin`)
@@ -24,7 +24,7 @@ pnpm install --frozen-lockfile
 
 **Node.js:** Version 20.x is required (CI uses Node 20)
 **pnpm:** Version 9.15.4 (managed via packageManager field)
-**.NET SDK:** Version 8.0.x required for building the test runner (packages/devextreme/testing/runner)
+**.NET SDK:** Version 8.0.x required for running devextreme-internal-tools (uses .NET tool for code generation)
 
 ### First-Time Setup
 

.github/workflows/codeql.yml

@@ -65,43 +65,10 @@ jobs:
           ref: refs/heads/${{ github.ref_name }}
           sha: ${{ steps.get-head-sha.outputs.SHA }}
 
-  analyze-csharp:
-    name: Analyze C#
-    runs-on: ubuntu-latest
-    permissions:
-      actions: read
-      contents: read
-      security-events: write
-
-    steps:
-      - name: Checkout repository
-        uses: actions/checkout@v4
-
-      - name: Get head SHA
-        id: get-head-sha
-        run: echo "SHA=$(git rev-parse origin/${{ github.ref_name }})" >> "$GITHUB_OUTPUT"
-
-      # Initializes the CodeQL tools for scanning.
-      - name: Initialize CodeQL
-        uses: github/codeql-action/init@v3
-        with:
-          languages: csharp
-          config-file: ./.github/codeql/codeql-config.yml
-
-      - name: Autobuild
-        uses: github/codeql-action/autobuild@v3
-
-      - name: Perform CodeQL Analysis
-        uses: github/codeql-action/analyze@v3
-        with:
-          category: "/language:csharp"
-          ref: refs/heads/${{ github.ref_name }}
-          sha: ${{ steps.get-head-sha.outputs.SHA }}
-
   fetch:
     runs-on: devextreme-shr2
     name: Fetch analysis
-    needs: [ analyze-javascript, analyze-csharp ]
+    needs: [ analyze-javascript ]
 
     steps:
       - name: Get Latest Analysis info