Fix path traversal vulnerabilities in MediaProvider Canonicalize filepath provided by the caller when hanling SCAN_FILE_CALL method call in MediaProvider. Additionally, make sure to check access permission in SCAN_FILE_CALL (using enforceCallingPermissionInternal()). Preemptively canonicalize Files provided as an arguments to the public API methods in ModernMediaScanner (scanFile(), scanDirectory() and onDirectoryDirty()) to prevent path traversal attacks. Bug: 262244882 Test: atest MediaProviderTests (cherry picked from https://googleplex-android-review.googlesource.com/q/commit:5bb32d7fba00b9e53c7e20ae8acaf6f84a8b2e8d) Merged-In: I61e77d69ae857984b819fa0ea27bec5c26a34842 Change-Id: I61e77d69ae857984b819fa0ea27bec5c26a34842