Refactor GitHub Actions workflow for conditional builds

- Removed redundant conditional checks for build jobs.
- Introduced a new step to determine if the build should run based on event type and input parameters.
- Updated job definitions to utilize the new build input logic for Windows, macOS, and Linux builds.

.github/workflows/build.yml

@@ -69,16 +69,6 @@ jobs:
     name: Build Desktop (${{ matrix.name }})
     needs: build_frontend
     runs-on: ${{ matrix.os }}
-    if: |
-      github.event_name == 'push' ||
-      (
-        github.event_name == 'workflow_dispatch' &&
-        (
-          (matrix.name == 'windows' && github.event.inputs.build_windows == 'true') ||
-          (matrix.name == 'mac' && github.event.inputs.build_mac == 'true') ||
-          (matrix.name == 'linux' && github.event.inputs.build_linux == 'true')
-        )
-      )
     strategy:
       fail-fast: false
       matrix:
@@ -88,20 +78,39 @@ jobs:
             node: 22
             python: "3.12"
             release_artifacts: "dist/*-win-installer.exe,dist/*-win-portable.exe"
+            build_input: build_windows
           - name: mac
             os: macos-13
             node: 18
             python: "3.11"
             release_artifacts: "dist/*-mac.dmg"
+            build_input: build_mac
           - name: linux
             os: ubuntu-latest
             node: 22
             python: "3.12"
             release_artifacts: "dist/*-linux.AppImage,dist/*-linux.deb,python-dist/*.whl"
+            build_input: build_linux
     permissions:
       contents: write
     steps:
+      - name: Check if build should run
+        id: should_build
+        run: |
+          if [ "${{ github.event_name }}" = "push" ]; then
+            echo "should_run=true" >> $GITHUB_OUTPUT
+          elif [ "${{ github.event_name }}" = "workflow_dispatch" ]; then
+            if [ "${{ github.event.inputs[matrix.build_input] }}" = "true" ]; then
+              echo "should_run=true" >> $GITHUB_OUTPUT
+            else
+              echo "should_run=false" >> $GITHUB_OUTPUT
+            fi
+          else
+            echo "should_run=false" >> $GITHUB_OUTPUT
+          fi
+
       - name: Clone Repo
+        if: steps.should_build.outputs.should_run == 'true'
         uses: actions/checkout@50fbc622fc4ef5163becd7fab6573eac35f8462e # v1
 
       - name: Install NodeJS