[shared_preferences] Fix Android type mismatch regression#8512

stuartmorgan-g merged 2 commits intoflutter:mainflutter/packages:mainfrom

stuartmorgan-g:shared-prefs-android-string-list-typeerror-regressionstuartmorgan-g/packages:shared-prefs-android-string-list-typeerror-regressionCopy head branch name to clipboard