End Crystals don't pass on the data containing what caused its explosion when it causes a TNT block to be ignited.

Steps to Reproduce:
1) Place an End Crystal and a block of TNT next to it

2) Hold a Totem of Undying and punch the End Crystal

3) The totem should be used when the End Crystal blows up and you will be killed in the TNT explosion

Expected:
"<player1> was blown up by <player1>"

Reality:
"<player1> was blown up by Primed TNT"  (22w44a)

"<player1> blew up" (22w45a +)

Edit:

After fixing MC-256951, it is now clear to see that TNT minecarts are also affected by this bug.

Player1 ignites a:

... TNT Minecart which then ignites a block of TNT -> "<player1> blew up" 
... Block of TNT which then ignites a TNT Minecart -> "<player1> blew up"
... End Crystal which then ignites a block of TNT -> "<player1> blew up"
... End Crystal which then ignites TNT Minecart -> "<player1> blew up"

All the above should be "<player1> was blown up by <player1>"

Note: This bug results in Player1's Allay being hurt and Neutral Mobs not attacking the player