fixed embedded file mapping

lib/packer/src/packerfs.zig

@@ -40,9 +40,10 @@ pub const PackerBytesMapping = struct {
     mappingId: usize,
     fileEntryId: usize,
     inMemory: bool,
+    embedded: bool,
 
     pub inline fn bytesNoEnd(self: @This()) []const u8 {
-        if (self.inMemory) {
+        if (self.embedded) {
             return self.bytes[0..self.bytes.len];
         } else {
             return self.bytes[0 .. self.bytes.len - 1];
@@ -357,6 +358,7 @@ pub const PackerFS = struct {
             .bytes = fileBytes,
             .mappingId = pakMountIndex,
             .fileEntryId = headerIndex,
+            .embedded = embedded,
             .inMemory = true,
         };
     }
@@ -400,6 +402,7 @@ pub const PackerFS = struct {
             .bytes = pakMountingRef.bytes[offset .. offset + header.fileLen],
             .mappingId = source,
             .fileEntryId = index,
+            .embedded = self.pakMountings.items[source].embedded,
             .inMemory = pakMountingRef.inMemory,
         };
     }