Update to JDK build 21.0.4-ga am: 26b6463692

Original change: https://android-review.googlesource.com/c/platform/prebuilts/jdk/jdk21/+/3271556

Change-Id: I30a828fd060b04d8789cc3e945ed833050435f70
Signed-off-by: Automerger Merge Worker <[email protected]>