Use ktfmt.sh wrapper for ktfmt hook

This CL makes the ktfmt hook use the bash wrapper introduced in
ag/I8746885396c7837a2a6b2a42dca780da290ed582 instead of directly
executing the ktfmt.jar, now that gLinux is not able to execute
JAR files directly anymore.

Bug: 342153000
Test: Manual, verified that the ktfmt hook was working
Flag: EXEMPT repo hook
Change-Id: I5d7b1bd04bef598ebc4caaf6bb06862f051ef0ad
diff --git a/PREUPLOAD.cfg b/PREUPLOAD.cfg
index 3c638de..2c4355f 100644
--- a/PREUPLOAD.cfg
+++ b/PREUPLOAD.cfg
@@ -10,4 +10,4 @@
 flag_hook = ${REPO_ROOT}/frameworks/base/packages/SystemUI/flag_check.py --msg=${PREUPLOAD_COMMIT_MESSAGE} --files=${PREUPLOAD_FILES} --project=${REPO_PATH}
 
 [Tool Paths]
-ktfmt = ${REPO_ROOT}/prebuilts/build-tools/common/framework/ktfmt.jar
+ktfmt = ${REPO_ROOT}/external/ktfmt/ktfmt.sh