previously, `builtins.break` didn't force its argument, resulting in a value wrapped with `break` being opaque to most builtins if not also wrapped with `seq`. see [lix-project/lix#1165] for more details on what this can break. this tiny fix just adds a call to `forceValue` inside `prim_break`, but unfortunately this "breaks" a few existing tests because it changes the call stack; those tests' golden outputs have been adjusted without modifying their intended purpose. Fixes #1165 [lix-project/lix#1165]: https://git.lix.systems/lix-project/lix/issues/1165 Change-Id: I5fe4ee3ff28b38aaf924125b8978130812e58fef