hx-swap-oob on breaks on hx-boost swaps (star button vainishing repo
tab changes), so that was why I made starBtn-oob fragment. But
hx-swap-oob="outerHTML:..." doesn't strip the wrapper element, adding
div wrappers to star button on every star/unstar interactions.
To fix this, dynamically put hx-swap-oob attribute to star button
itself by using .HxSwapOob param.
Signed-off-by: Seongmin Lee git@boltless.me