chore(*): add mathlib4 synchronization comments (#19024)
Regenerated from the [port status wiki page](https://github.com/leanprover-community/mathlib/wiki/mathlib4-port-status).
Relates to the following files:
* `algebra.module.localized_module`
* `analysis.box_integral.partition.tagged`
* `analysis.calculus.tangent_cone`
* `analysis.complex.basic`
* `analysis.complex.re_im_topology`
* `analysis.normed.group.add_circle`
* `analysis.special_functions.exp`
* `analysis.special_functions.log.basic`
* `category_theory.cofiltered_system`
* `category_theory.endofunctor.algebra`
* `category_theory.sites.dense_subsite`
* `category_theory.sites.induced_topology`
* `category_theory.sites.subsheaf`
* `combinatorics.hall.basic`
* `combinatorics.simple_graph.ends.defs`
* `data.polynomial.laurent`
* `group_theory.nielsen_schreier`
* `order.category.Frm`
* `topology.category.Locale`
* `topology.instances.add_circle`
