ci: replace dartDefine by dartDefineMulti in flutter build jobs

Author: koukibadr

build/steps-build-android.yml

@@ -89,8 +89,7 @@ steps:
     profileMode: false
     projectDirectory: '${{ parameters.pathToSrc }}/app'
     verboseMode: true
-    dartDefine: ENV=$(applicationEnvironment)
-    dartDefine: BUGSEE_TOKEN=$(AndroidBugseeToken)
+    dartDefineMulti: ENV=$(applicationEnvironment) BUGSEE_TOKEN=$(AndroidBugseeToken)
 
 - template: templates/flutter-diagnostics.yml
   parameters:

build/steps-build-ios.yml

@@ -95,8 +95,7 @@ steps:
     projectDirectory: '${{ parameters.pathToSrc }}/app'
     verboseMode: true
     exportOptionsPlist: '$(exportOptions.secureFilePath)'
-    dartDefine: ENV=$(applicationEnvironment)
-    dartDefine: BUGSEE_TOKEN=$(iOSBugseeToken)
+    dartDefineMulti: ENV=$(applicationEnvironment) BUGSEE_TOKEN=$(iOSBugseeToken)
 
 - template: templates/flutter-diagnostics.yml
   parameters: