Fix resolution results on invalid use of `all` use-site target on grouped annotations

According to [KEEP 402](https://github.com/Kotlin/KEEP/blob/74a4b4a4937a0a9a70afff71276044c731c0e20b/proposals/KEEP-0402-annotation-target-in-properties.md?plain=1#L107), applying `all` to a group of annotations, e.g., `@all:[Anno1 Anno2]`, is not defined, so KSP should not return any results.

Bug shown in https://github.com/google/ksp/pull/2911