fix: track invalid files in LocalFlags to fix global count (#10170)

Move the "invalid" bit to a local flag, making it easier to track in counts etc.

lib/protocol/encryption.go

@@ -357,11 +357,13 @@ func encryptFileInfo(keyGen *KeyGenerator, fi FileInfo, folderKey *[keySize]byte
 		Permissions: 0o644,
 		ModifiedS:   1234567890, // Sat Feb 14 00:31:30 CET 2009
 		Deleted:     fi.Deleted,
-		RawInvalid:  fi.IsInvalid(),
 		Version:     version,
 		Sequence:    fi.Sequence,
 		Encrypted:   encryptedFI,
 	}
+	if fi.IsInvalid() {
+		enc.LocalFlags = FlagLocalRemoteInvalid
+	}
 	if typ == FileInfoTypeFile {
 		enc.Size = offset // new total file size
 		enc.Blocks = blocks