Sometimes the plant recovers nicely but it can take some time. You could use a wax or caulk to close up the wound to prevent water and insect damage. As the plant grows it will start to push out the sealer material. The biggest issue is to ensure its a good seal between the branch and sealer where rain can get in. Some people say sealers just trap moisture and cause problems some say you need to seal. I have not had a rot issue sealing damage up but have had rot issues by not sealing up damage which was able to pool water. Its a subjective call to make on your part.

While outside of your post it does appear there may be some minor sunburn on the branches. I recall from a previous thread you were increasing watering so the resolution is already in the works. For future reference, sunburn can be an indicator of being too dry. The good news on being too dry was the branch bent instead of breaking off.