Is your feature request related to a problem?

Not really. Just new API that would be nice.
I guess if I were to think of a problem, when I place structures, block updates happen when I may not want them to.
A good example is flowing water, waterlogging (weird bug in MC), fences updates, etc.

Describe the solution you'd like.

Minecraft 1.21.5 added a new feature for "strict" placement of structures using the structure block and /place template command.
Strict placement allows for the structure to be placed without block updates, ex: water not flowing.

Looking into how the command/structure block do it, it would be as easy as changing this line:

changing the flags from 2 to 2 | (strict ? 816 : 0) and adding in a method parameter for strict
For reference the 816 flag is UPDATE_SKIP_ALL_SIDEEFFECTS

Describe alternatives you've considered.

Nothing I can think of!

Other

Visual Example: