ospfd: Fixing Summary origination after range configuration

ospfd: Fixing Summary origination after range configuration

Description:
	After area range config, summary lsas are aggerated to configured
	route but later it was being flushed instead of the actual summary
	lsa. This was seen when prefix-id of the aggregated route is same
	as one of the actual summary route.
	Here, aggregated summary lsa need to be returned to set the flag
	SUMMARY_APPROVE after originating aggregated summary lsa but its not.
	Which is being cleaned up as part of unapproved summary cleanup.
	Corrected this now.

Issue: #13028

Signed-off-by: Rajesh Girada <rgirada@vmware.com>