Update Flutter setup for Windows and Android

- Use PowerShell for Windows installation and added `refreshenv`.
- Set JAVA_HOME for Android builds to use Java 17.

.github/workflows/build-and-release.yml

@@ -64,12 +64,14 @@ jobs:
 
       - name: Set up Flutter environment for Windows
         if: ${{ matrix.platform == 'windows' }}
+        shell: powershell
         run: |
           Set-ExecutionPolicy Bypass -Scope Process -Force;
           [System.Net.ServicePointManager]::SecurityProtocol = [System.Net.SecurityProtocolType]::Tls12;
           iex ((New-Object System.Net.WebClient).DownloadString('https://chocolatey.org/install.ps1'))
           choco install flutter -y
           echo "C:\\flutter\\bin" >> $GITHUB_ENV
+          refreshenv
           flutter --version
 
       - name: Set up Flutter environment for Android
@@ -119,6 +121,8 @@ jobs:
               flutter build linux --release
               ;;
             "android")
+              export JAVA_HOME=/usr/lib/jvm/java-17-openjdk-amd64
+              export PATH=$JAVA_HOME/bin:$PATH
               flutter build apk --release
               ;;
             "macos")