Multiple targets embedding the same internal framework dependency with
different code-signing attributes should not overwrite each other in the
generated `PBXBuildFile`. Extend commit 0282429c5a (Xcode: Fix
XCODE_EMBED_FRAMEWORKS when settings differ across targets, 2024-12-02,
v4.0.0-rc1~358^2) to cover target names.
Remove `FileRefToEmbedBuildFileMap` entirely, forcing CMake to
instantiate a brand-new `PBXBuildFile` reference object with a unique
ref value for every separate target embedding action, matching Xcode's
native multi-target configuration behavior.
Fixes: #27850
halx99
Craig Scott