Update toolchain config to allow reflective access to `com.sun.tools.javac.parser`
Update toolchain config to allow reflective access to `com.sun.tools.javac.parser`

Reported here: https://github.com/google/error-prone/issues/2271#issuecomment-1018294740

PiperOrigin-RevId: 423272568
Change-Id: I1cc20d69c5502afb8e9769d036769fa0448f75f4

bazelbuild/rules_java