Fix repackaging of jars with non-default compression configuration

Previously, if a jar that used custom compression configuration was
repackaged, a failure may occur if an entry in the repackaged jar had
a different compressed size to the entry in the source jar.

This commit updates JarWriter to clear the input entry's compressed
size (by setting it to -1) so that the repackaged entry's compressed
size does not have to match that of the input entry.

Closes gh-13720

spring-boot-tools/spring-boot-loader-tools/src/main/java/org/springframework/boot/loader/tools/JarWriter.java

@@ -140,6 +140,9 @@ public class JarWriter implements LoaderClassesWriter {
 					inputStream = new ZipHeaderPeekInputStream(
 							jarFile.getInputStream(entry));
 				}
+				else {
+					entry.setCompressedSize(-1);
+				}
 				EntryWriter entryWriter = new InputStreamEntryWriter(inputStream, true);
 				JarEntry transformedEntry = entryTransformer.transform(entry);
 				if (transformedEntry != null) {