[MC-121864] '/execute store' does not allow multiple target entities

The command /execute store result|success entity does not allow multiple targets even though it could work and should not cause any problems.

Use the following command

/execute store success entity @e Glowing byte 1 run say Success

Linked issues

You can use /execute as @e run execute store success entity @s Glowing byte 1 run say Success

For now this is intentional, but that may be revisited in the future.