Migration changes unnecessary lines

[mig-hub]

I know it is minor, but the migration script to svelte-5 changes unnecessary lines.

e.g.

{#if title?.length }

Becomes:

{#if title?.length}

Note the space removed before the closing curly bracket.

I know this space might not be the current coding style but I personally like it that way. And the point is that the script should not change a line if it is functionally correct. Otherwise it makes the git commit bigger for nothing.