JIRA: https://jira.spring.io/browse/INT-3536 The fix for opening multiple IMAP connections in the idle adapter inadvertently removed the check for the store being open. Add `connectStoreIfNecessary()` and test case.
JIRA: https://jira.spring.io/browse/INT-3536 The fix for opening multiple IMAP connections in the idle adapter inadvertently removed the check for the store being open. Add `connectStoreIfNecessary()` and test case.