execute if/unless missing -> execute for data, blocks

Affects versions starting at 26.4 Snapshot 8

execute (if|unless) data (block|entity|storage) <source> <path> → execute lacks → execute for all data types listed.

• Ex. /execute if data block 0 0 0 foo.bar run tellraw @a "Hello!" results in Incorrect argument for command at position N

execute (if|unless) blocks <start> <end> <destination> all → execute lacks → execute

• Ex. /execute if blocks 0 0 0 1 1 1 2 2 2 all run tellraw @a "Hello!" results in Incorrect argument for command at position N

• Note that this does not occur when using masked in place of all

Strangely, these commands can still sometimes be run and don’t cause functions to fail to compile.