Add missing dependency on compose plugin in kapt rules

The kapt rule uses kotlincFlags but was not using kotlincDeps,
causing the rule to get the -Xplugin argument on the compose
compiler plugin jar, but not have a dependency on it.

Bug: 231222079
Test: TestKotlinCompose
Change-Id: I4c2cf30fb7d8cad4eededa29f67f4ffd459caa41