fixup! Add omitAppleDoubleFilesFromBuildCache experiment to filter macOS metadata files from build cache

Author: iclanton

libraries/rush-lib/assets/rush-init/common/config/rush/experiments.json

@@ -117,5 +117,13 @@
    * subspace.  This is useful for large product groups who work in separate subspaces and generally prefer to consume
    * each other's packages via the NPM registry.
    */
-  /*[LINE "HYPOTHETICAL"]*/ "exemptDecoupledDependenciesBetweenSubspaces": false
+  /*[LINE "HYPOTHETICAL"]*/ "exemptDecoupledDependenciesBetweenSubspaces": false,
+
+  /**
+   * If true, when running on macOS, Rush will omit AppleDouble files (._*) from build cache archives
+   * when a companion file exists in the same directory. AppleDouble files are automatically created by
+   * macOS to store extended attributes on filesystems that don't support them, and should generally not
+   * be included in the shared build cache.
+   */
+  /*[LINE "HYPOTHETICAL"]*/ "omitAppleDoubleFilesFromBuildCache": true
 }