try_compile: Fix COPY_FILE with app-bundles on non-macOS hosts
Cross compiling from eg linux to apple-platforms requires handling of .app-Bundles.
Fixes: #23597 (closed)
Topic-rename: try_compile-cross-app-bundles
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Cross compiling from eg linux to apple-platforms requires handling of .app-Bundles.
Fixes: #23597 (closed)
Topic-rename: try_compile-cross-app-bundles